diff --git a/app/javascript/mastodon/actions/accounts.js b/app/javascript/mastodon/actions/accounts.js
new file mode 100644
index 00000000000..fbaebf786dd
--- /dev/null
+++ b/app/javascript/mastodon/actions/accounts.js
@@ -0,0 +1,659 @@
+import api, { getLinks } from '../api';
+
+export const ACCOUNT_FETCH_REQUEST = 'ACCOUNT_FETCH_REQUEST';
+export const ACCOUNT_FETCH_SUCCESS = 'ACCOUNT_FETCH_SUCCESS';
+export const ACCOUNT_FETCH_FAIL    = 'ACCOUNT_FETCH_FAIL';
+
+export const ACCOUNT_FOLLOW_REQUEST = 'ACCOUNT_FOLLOW_REQUEST';
+export const ACCOUNT_FOLLOW_SUCCESS = 'ACCOUNT_FOLLOW_SUCCESS';
+export const ACCOUNT_FOLLOW_FAIL    = 'ACCOUNT_FOLLOW_FAIL';
+
+export const ACCOUNT_UNFOLLOW_REQUEST = 'ACCOUNT_UNFOLLOW_REQUEST';
+export const ACCOUNT_UNFOLLOW_SUCCESS = 'ACCOUNT_UNFOLLOW_SUCCESS';
+export const ACCOUNT_UNFOLLOW_FAIL    = 'ACCOUNT_UNFOLLOW_FAIL';
+
+export const ACCOUNT_BLOCK_REQUEST = 'ACCOUNT_BLOCK_REQUEST';
+export const ACCOUNT_BLOCK_SUCCESS = 'ACCOUNT_BLOCK_SUCCESS';
+export const ACCOUNT_BLOCK_FAIL    = 'ACCOUNT_BLOCK_FAIL';
+
+export const ACCOUNT_UNBLOCK_REQUEST = 'ACCOUNT_UNBLOCK_REQUEST';
+export const ACCOUNT_UNBLOCK_SUCCESS = 'ACCOUNT_UNBLOCK_SUCCESS';
+export const ACCOUNT_UNBLOCK_FAIL    = 'ACCOUNT_UNBLOCK_FAIL';
+
+export const ACCOUNT_MUTE_REQUEST = 'ACCOUNT_MUTE_REQUEST';
+export const ACCOUNT_MUTE_SUCCESS = 'ACCOUNT_MUTE_SUCCESS';
+export const ACCOUNT_MUTE_FAIL    = 'ACCOUNT_MUTE_FAIL';
+
+export const ACCOUNT_UNMUTE_REQUEST = 'ACCOUNT_UNMUTE_REQUEST';
+export const ACCOUNT_UNMUTE_SUCCESS = 'ACCOUNT_UNMUTE_SUCCESS';
+export const ACCOUNT_UNMUTE_FAIL    = 'ACCOUNT_UNMUTE_FAIL';
+
+export const FOLLOWERS_FETCH_REQUEST = 'FOLLOWERS_FETCH_REQUEST';
+export const FOLLOWERS_FETCH_SUCCESS = 'FOLLOWERS_FETCH_SUCCESS';
+export const FOLLOWERS_FETCH_FAIL    = 'FOLLOWERS_FETCH_FAIL';
+
+export const FOLLOWERS_EXPAND_REQUEST = 'FOLLOWERS_EXPAND_REQUEST';
+export const FOLLOWERS_EXPAND_SUCCESS = 'FOLLOWERS_EXPAND_SUCCESS';
+export const FOLLOWERS_EXPAND_FAIL    = 'FOLLOWERS_EXPAND_FAIL';
+
+export const FOLLOWING_FETCH_REQUEST = 'FOLLOWING_FETCH_REQUEST';
+export const FOLLOWING_FETCH_SUCCESS = 'FOLLOWING_FETCH_SUCCESS';
+export const FOLLOWING_FETCH_FAIL    = 'FOLLOWING_FETCH_FAIL';
+
+export const FOLLOWING_EXPAND_REQUEST = 'FOLLOWING_EXPAND_REQUEST';
+export const FOLLOWING_EXPAND_SUCCESS = 'FOLLOWING_EXPAND_SUCCESS';
+export const FOLLOWING_EXPAND_FAIL    = 'FOLLOWING_EXPAND_FAIL';
+
+export const RELATIONSHIPS_FETCH_REQUEST = 'RELATIONSHIPS_FETCH_REQUEST';
+export const RELATIONSHIPS_FETCH_SUCCESS = 'RELATIONSHIPS_FETCH_SUCCESS';
+export const RELATIONSHIPS_FETCH_FAIL    = 'RELATIONSHIPS_FETCH_FAIL';
+
+export const FOLLOW_REQUESTS_FETCH_REQUEST = 'FOLLOW_REQUESTS_FETCH_REQUEST';
+export const FOLLOW_REQUESTS_FETCH_SUCCESS = 'FOLLOW_REQUESTS_FETCH_SUCCESS';
+export const FOLLOW_REQUESTS_FETCH_FAIL    = 'FOLLOW_REQUESTS_FETCH_FAIL';
+
+export const FOLLOW_REQUESTS_EXPAND_REQUEST = 'FOLLOW_REQUESTS_EXPAND_REQUEST';
+export const FOLLOW_REQUESTS_EXPAND_SUCCESS = 'FOLLOW_REQUESTS_EXPAND_SUCCESS';
+export const FOLLOW_REQUESTS_EXPAND_FAIL    = 'FOLLOW_REQUESTS_EXPAND_FAIL';
+
+export const FOLLOW_REQUEST_AUTHORIZE_REQUEST = 'FOLLOW_REQUEST_AUTHORIZE_REQUEST';
+export const FOLLOW_REQUEST_AUTHORIZE_SUCCESS = 'FOLLOW_REQUEST_AUTHORIZE_SUCCESS';
+export const FOLLOW_REQUEST_AUTHORIZE_FAIL    = 'FOLLOW_REQUEST_AUTHORIZE_FAIL';
+
+export const FOLLOW_REQUEST_REJECT_REQUEST = 'FOLLOW_REQUEST_REJECT_REQUEST';
+export const FOLLOW_REQUEST_REJECT_SUCCESS = 'FOLLOW_REQUEST_REJECT_SUCCESS';
+export const FOLLOW_REQUEST_REJECT_FAIL    = 'FOLLOW_REQUEST_REJECT_FAIL';
+
+export function fetchAccount(id) {
+  return (dispatch, getState) => {
+    dispatch(fetchRelationships([id]));
+
+    if (getState().getIn(['accounts', id], null) !== null) {
+      return;
+    }
+
+    dispatch(fetchAccountRequest(id));
+
+    api(getState).get(`/api/v1/accounts/${id}`).then(response => {
+      dispatch(fetchAccountSuccess(response.data));
+    }).catch(error => {
+      dispatch(fetchAccountFail(id, error));
+    });
+  };
+};
+
+export function fetchAccountRequest(id) {
+  return {
+    type: ACCOUNT_FETCH_REQUEST,
+    id,
+  };
+};
+
+export function fetchAccountSuccess(account) {
+  return {
+    type: ACCOUNT_FETCH_SUCCESS,
+    account,
+  };
+};
+
+export function fetchAccountFail(id, error) {
+  return {
+    type: ACCOUNT_FETCH_FAIL,
+    id,
+    error,
+    skipAlert: true,
+  };
+};
+
+export function followAccount(id) {
+  return (dispatch, getState) => {
+    dispatch(followAccountRequest(id));
+
+    api(getState).post(`/api/v1/accounts/${id}/follow`).then(response => {
+      dispatch(followAccountSuccess(response.data));
+    }).catch(error => {
+      dispatch(followAccountFail(error));
+    });
+  };
+};
+
+export function unfollowAccount(id) {
+  return (dispatch, getState) => {
+    dispatch(unfollowAccountRequest(id));
+
+    api(getState).post(`/api/v1/accounts/${id}/unfollow`).then(response => {
+      dispatch(unfollowAccountSuccess(response.data, getState().get('statuses')));
+    }).catch(error => {
+      dispatch(unfollowAccountFail(error));
+    });
+  };
+};
+
+export function followAccountRequest(id) {
+  return {
+    type: ACCOUNT_FOLLOW_REQUEST,
+    id,
+  };
+};
+
+export function followAccountSuccess(relationship) {
+  return {
+    type: ACCOUNT_FOLLOW_SUCCESS,
+    relationship,
+  };
+};
+
+export function followAccountFail(error) {
+  return {
+    type: ACCOUNT_FOLLOW_FAIL,
+    error,
+  };
+};
+
+export function unfollowAccountRequest(id) {
+  return {
+    type: ACCOUNT_UNFOLLOW_REQUEST,
+    id,
+  };
+};
+
+export function unfollowAccountSuccess(relationship, statuses) {
+  return {
+    type: ACCOUNT_UNFOLLOW_SUCCESS,
+    relationship,
+    statuses,
+  };
+};
+
+export function unfollowAccountFail(error) {
+  return {
+    type: ACCOUNT_UNFOLLOW_FAIL,
+    error,
+  };
+};
+
+export function blockAccount(id) {
+  return (dispatch, getState) => {
+    dispatch(blockAccountRequest(id));
+
+    api(getState).post(`/api/v1/accounts/${id}/block`).then(response => {
+      // Pass in entire statuses map so we can use it to filter stuff in different parts of the reducers
+      dispatch(blockAccountSuccess(response.data, getState().get('statuses')));
+    }).catch(error => {
+      dispatch(blockAccountFail(id, error));
+    });
+  };
+};
+
+export function unblockAccount(id) {
+  return (dispatch, getState) => {
+    dispatch(unblockAccountRequest(id));
+
+    api(getState).post(`/api/v1/accounts/${id}/unblock`).then(response => {
+      dispatch(unblockAccountSuccess(response.data));
+    }).catch(error => {
+      dispatch(unblockAccountFail(id, error));
+    });
+  };
+};
+
+export function blockAccountRequest(id) {
+  return {
+    type: ACCOUNT_BLOCK_REQUEST,
+    id,
+  };
+};
+
+export function blockAccountSuccess(relationship, statuses) {
+  return {
+    type: ACCOUNT_BLOCK_SUCCESS,
+    relationship,
+    statuses,
+  };
+};
+
+export function blockAccountFail(error) {
+  return {
+    type: ACCOUNT_BLOCK_FAIL,
+    error,
+  };
+};
+
+export function unblockAccountRequest(id) {
+  return {
+    type: ACCOUNT_UNBLOCK_REQUEST,
+    id,
+  };
+};
+
+export function unblockAccountSuccess(relationship) {
+  return {
+    type: ACCOUNT_UNBLOCK_SUCCESS,
+    relationship,
+  };
+};
+
+export function unblockAccountFail(error) {
+  return {
+    type: ACCOUNT_UNBLOCK_FAIL,
+    error,
+  };
+};
+
+
+export function muteAccount(id, notifications) {
+  return (dispatch, getState) => {
+    dispatch(muteAccountRequest(id));
+
+    api(getState).post(`/api/v1/accounts/${id}/mute`, { notifications }).then(response => {
+      // Pass in entire statuses map so we can use it to filter stuff in different parts of the reducers
+      dispatch(muteAccountSuccess(response.data, getState().get('statuses')));
+    }).catch(error => {
+      dispatch(muteAccountFail(id, error));
+    });
+  };
+};
+
+export function unmuteAccount(id) {
+  return (dispatch, getState) => {
+    dispatch(unmuteAccountRequest(id));
+
+    api(getState).post(`/api/v1/accounts/${id}/unmute`).then(response => {
+      dispatch(unmuteAccountSuccess(response.data));
+    }).catch(error => {
+      dispatch(unmuteAccountFail(id, error));
+    });
+  };
+};
+
+export function muteAccountRequest(id) {
+  return {
+    type: ACCOUNT_MUTE_REQUEST,
+    id,
+  };
+};
+
+export function muteAccountSuccess(relationship, statuses) {
+  return {
+    type: ACCOUNT_MUTE_SUCCESS,
+    relationship,
+    statuses,
+  };
+};
+
+export function muteAccountFail(error) {
+  return {
+    type: ACCOUNT_MUTE_FAIL,
+    error,
+  };
+};
+
+export function unmuteAccountRequest(id) {
+  return {
+    type: ACCOUNT_UNMUTE_REQUEST,
+    id,
+  };
+};
+
+export function unmuteAccountSuccess(relationship) {
+  return {
+    type: ACCOUNT_UNMUTE_SUCCESS,
+    relationship,
+  };
+};
+
+export function unmuteAccountFail(error) {
+  return {
+    type: ACCOUNT_UNMUTE_FAIL,
+    error,
+  };
+};
+
+
+export function fetchFollowers(id) {
+  return (dispatch, getState) => {
+    dispatch(fetchFollowersRequest(id));
+
+    api(getState).get(`/api/v1/accounts/${id}/followers`).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+
+      dispatch(fetchFollowersSuccess(id, response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => {
+      dispatch(fetchFollowersFail(id, error));
+    });
+  };
+};
+
+export function fetchFollowersRequest(id) {
+  return {
+    type: FOLLOWERS_FETCH_REQUEST,
+    id,
+  };
+};
+
+export function fetchFollowersSuccess(id, accounts, next) {
+  return {
+    type: FOLLOWERS_FETCH_SUCCESS,
+    id,
+    accounts,
+    next,
+  };
+};
+
+export function fetchFollowersFail(id, error) {
+  return {
+    type: FOLLOWERS_FETCH_FAIL,
+    id,
+    error,
+  };
+};
+
+export function expandFollowers(id) {
+  return (dispatch, getState) => {
+    const url = getState().getIn(['user_lists', 'followers', id, 'next']);
+
+    if (url === null) {
+      return;
+    }
+
+    dispatch(expandFollowersRequest(id));
+
+    api(getState).get(url).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+
+      dispatch(expandFollowersSuccess(id, response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => {
+      dispatch(expandFollowersFail(id, error));
+    });
+  };
+};
+
+export function expandFollowersRequest(id) {
+  return {
+    type: FOLLOWERS_EXPAND_REQUEST,
+    id,
+  };
+};
+
+export function expandFollowersSuccess(id, accounts, next) {
+  return {
+    type: FOLLOWERS_EXPAND_SUCCESS,
+    id,
+    accounts,
+    next,
+  };
+};
+
+export function expandFollowersFail(id, error) {
+  return {
+    type: FOLLOWERS_EXPAND_FAIL,
+    id,
+    error,
+  };
+};
+
+export function fetchFollowing(id) {
+  return (dispatch, getState) => {
+    dispatch(fetchFollowingRequest(id));
+
+    api(getState).get(`/api/v1/accounts/${id}/following`).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+
+      dispatch(fetchFollowingSuccess(id, response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => {
+      dispatch(fetchFollowingFail(id, error));
+    });
+  };
+};
+
+export function fetchFollowingRequest(id) {
+  return {
+    type: FOLLOWING_FETCH_REQUEST,
+    id,
+  };
+};
+
+export function fetchFollowingSuccess(id, accounts, next) {
+  return {
+    type: FOLLOWING_FETCH_SUCCESS,
+    id,
+    accounts,
+    next,
+  };
+};
+
+export function fetchFollowingFail(id, error) {
+  return {
+    type: FOLLOWING_FETCH_FAIL,
+    id,
+    error,
+  };
+};
+
+export function expandFollowing(id) {
+  return (dispatch, getState) => {
+    const url = getState().getIn(['user_lists', 'following', id, 'next']);
+
+    if (url === null) {
+      return;
+    }
+
+    dispatch(expandFollowingRequest(id));
+
+    api(getState).get(url).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+
+      dispatch(expandFollowingSuccess(id, response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => {
+      dispatch(expandFollowingFail(id, error));
+    });
+  };
+};
+
+export function expandFollowingRequest(id) {
+  return {
+    type: FOLLOWING_EXPAND_REQUEST,
+    id,
+  };
+};
+
+export function expandFollowingSuccess(id, accounts, next) {
+  return {
+    type: FOLLOWING_EXPAND_SUCCESS,
+    id,
+    accounts,
+    next,
+  };
+};
+
+export function expandFollowingFail(id, error) {
+  return {
+    type: FOLLOWING_EXPAND_FAIL,
+    id,
+    error,
+  };
+};
+
+export function fetchRelationships(accountIds) {
+  return (dispatch, getState) => {
+    const loadedRelationships = getState().get('relationships');
+    const newAccountIds = accountIds.filter(id => loadedRelationships.get(id, null) === null);
+
+    if (newAccountIds.length === 0) {
+      return;
+    }
+
+    dispatch(fetchRelationshipsRequest(newAccountIds));
+
+    api(getState).get(`/api/v1/accounts/relationships?${newAccountIds.map(id => `id[]=${id}`).join('&')}`).then(response => {
+      dispatch(fetchRelationshipsSuccess(response.data));
+    }).catch(error => {
+      dispatch(fetchRelationshipsFail(error));
+    });
+  };
+};
+
+export function fetchRelationshipsRequest(ids) {
+  return {
+    type: RELATIONSHIPS_FETCH_REQUEST,
+    ids,
+    skipLoading: true,
+  };
+};
+
+export function fetchRelationshipsSuccess(relationships) {
+  return {
+    type: RELATIONSHIPS_FETCH_SUCCESS,
+    relationships,
+    skipLoading: true,
+  };
+};
+
+export function fetchRelationshipsFail(error) {
+  return {
+    type: RELATIONSHIPS_FETCH_FAIL,
+    error,
+    skipLoading: true,
+  };
+};
+
+export function fetchFollowRequests() {
+  return (dispatch, getState) => {
+    dispatch(fetchFollowRequestsRequest());
+
+    api(getState).get('/api/v1/follow_requests').then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(fetchFollowRequestsSuccess(response.data, next ? next.uri : null));
+    }).catch(error => dispatch(fetchFollowRequestsFail(error)));
+  };
+};
+
+export function fetchFollowRequestsRequest() {
+  return {
+    type: FOLLOW_REQUESTS_FETCH_REQUEST,
+  };
+};
+
+export function fetchFollowRequestsSuccess(accounts, next) {
+  return {
+    type: FOLLOW_REQUESTS_FETCH_SUCCESS,
+    accounts,
+    next,
+  };
+};
+
+export function fetchFollowRequestsFail(error) {
+  return {
+    type: FOLLOW_REQUESTS_FETCH_FAIL,
+    error,
+  };
+};
+
+export function expandFollowRequests() {
+  return (dispatch, getState) => {
+    const url = getState().getIn(['user_lists', 'follow_requests', 'next']);
+
+    if (url === null) {
+      return;
+    }
+
+    dispatch(expandFollowRequestsRequest());
+
+    api(getState).get(url).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(expandFollowRequestsSuccess(response.data, next ? next.uri : null));
+    }).catch(error => dispatch(expandFollowRequestsFail(error)));
+  };
+};
+
+export function expandFollowRequestsRequest() {
+  return {
+    type: FOLLOW_REQUESTS_EXPAND_REQUEST,
+  };
+};
+
+export function expandFollowRequestsSuccess(accounts, next) {
+  return {
+    type: FOLLOW_REQUESTS_EXPAND_SUCCESS,
+    accounts,
+    next,
+  };
+};
+
+export function expandFollowRequestsFail(error) {
+  return {
+    type: FOLLOW_REQUESTS_EXPAND_FAIL,
+    error,
+  };
+};
+
+export function authorizeFollowRequest(id) {
+  return (dispatch, getState) => {
+    dispatch(authorizeFollowRequestRequest(id));
+
+    api(getState)
+      .post(`/api/v1/follow_requests/${id}/authorize`)
+      .then(() => dispatch(authorizeFollowRequestSuccess(id)))
+      .catch(error => dispatch(authorizeFollowRequestFail(id, error)));
+  };
+};
+
+export function authorizeFollowRequestRequest(id) {
+  return {
+    type: FOLLOW_REQUEST_AUTHORIZE_REQUEST,
+    id,
+  };
+};
+
+export function authorizeFollowRequestSuccess(id) {
+  return {
+    type: FOLLOW_REQUEST_AUTHORIZE_SUCCESS,
+    id,
+  };
+};
+
+export function authorizeFollowRequestFail(id, error) {
+  return {
+    type: FOLLOW_REQUEST_AUTHORIZE_FAIL,
+    id,
+    error,
+  };
+};
+
+
+export function rejectFollowRequest(id) {
+  return (dispatch, getState) => {
+    dispatch(rejectFollowRequestRequest(id));
+
+    api(getState)
+      .post(`/api/v1/follow_requests/${id}/reject`)
+      .then(() => dispatch(rejectFollowRequestSuccess(id)))
+      .catch(error => dispatch(rejectFollowRequestFail(id, error)));
+  };
+};
+
+export function rejectFollowRequestRequest(id) {
+  return {
+    type: FOLLOW_REQUEST_REJECT_REQUEST,
+    id,
+  };
+};
+
+export function rejectFollowRequestSuccess(id) {
+  return {
+    type: FOLLOW_REQUEST_REJECT_SUCCESS,
+    id,
+  };
+};
+
+export function rejectFollowRequestFail(id, error) {
+  return {
+    type: FOLLOW_REQUEST_REJECT_FAIL,
+    id,
+    error,
+  };
+};
diff --git a/app/javascript/mastodon/actions/alerts.js b/app/javascript/mastodon/actions/alerts.js
new file mode 100644
index 00000000000..f37fdeeb6ab
--- /dev/null
+++ b/app/javascript/mastodon/actions/alerts.js
@@ -0,0 +1,24 @@
+export const ALERT_SHOW    = 'ALERT_SHOW';
+export const ALERT_DISMISS = 'ALERT_DISMISS';
+export const ALERT_CLEAR   = 'ALERT_CLEAR';
+
+export function dismissAlert(alert) {
+  return {
+    type: ALERT_DISMISS,
+    alert,
+  };
+};
+
+export function clearAlert() {
+  return {
+    type: ALERT_CLEAR,
+  };
+};
+
+export function showAlert(title, message) {
+  return {
+    type: ALERT_SHOW,
+    title,
+    message,
+  };
+};
diff --git a/app/javascript/mastodon/actions/blocks.js b/app/javascript/mastodon/actions/blocks.js
new file mode 100644
index 00000000000..553283a71f5
--- /dev/null
+++ b/app/javascript/mastodon/actions/blocks.js
@@ -0,0 +1,82 @@
+import api, { getLinks } from '../api';
+import { fetchRelationships } from './accounts';
+
+export const BLOCKS_FETCH_REQUEST = 'BLOCKS_FETCH_REQUEST';
+export const BLOCKS_FETCH_SUCCESS = 'BLOCKS_FETCH_SUCCESS';
+export const BLOCKS_FETCH_FAIL    = 'BLOCKS_FETCH_FAIL';
+
+export const BLOCKS_EXPAND_REQUEST = 'BLOCKS_EXPAND_REQUEST';
+export const BLOCKS_EXPAND_SUCCESS = 'BLOCKS_EXPAND_SUCCESS';
+export const BLOCKS_EXPAND_FAIL    = 'BLOCKS_EXPAND_FAIL';
+
+export function fetchBlocks() {
+  return (dispatch, getState) => {
+    dispatch(fetchBlocksRequest());
+
+    api(getState).get('/api/v1/blocks').then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(fetchBlocksSuccess(response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => dispatch(fetchBlocksFail(error)));
+  };
+};
+
+export function fetchBlocksRequest() {
+  return {
+    type: BLOCKS_FETCH_REQUEST,
+  };
+};
+
+export function fetchBlocksSuccess(accounts, next) {
+  return {
+    type: BLOCKS_FETCH_SUCCESS,
+    accounts,
+    next,
+  };
+};
+
+export function fetchBlocksFail(error) {
+  return {
+    type: BLOCKS_FETCH_FAIL,
+    error,
+  };
+};
+
+export function expandBlocks() {
+  return (dispatch, getState) => {
+    const url = getState().getIn(['user_lists', 'blocks', 'next']);
+
+    if (url === null) {
+      return;
+    }
+
+    dispatch(expandBlocksRequest());
+
+    api(getState).get(url).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(expandBlocksSuccess(response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => dispatch(expandBlocksFail(error)));
+  };
+};
+
+export function expandBlocksRequest() {
+  return {
+    type: BLOCKS_EXPAND_REQUEST,
+  };
+};
+
+export function expandBlocksSuccess(accounts, next) {
+  return {
+    type: BLOCKS_EXPAND_SUCCESS,
+    accounts,
+    next,
+  };
+};
+
+export function expandBlocksFail(error) {
+  return {
+    type: BLOCKS_EXPAND_FAIL,
+    error,
+  };
+};
diff --git a/app/javascript/mastodon/actions/bundles.js b/app/javascript/mastodon/actions/bundles.js
new file mode 100644
index 00000000000..ecc9c8f7d3e
--- /dev/null
+++ b/app/javascript/mastodon/actions/bundles.js
@@ -0,0 +1,25 @@
+export const BUNDLE_FETCH_REQUEST = 'BUNDLE_FETCH_REQUEST';
+export const BUNDLE_FETCH_SUCCESS = 'BUNDLE_FETCH_SUCCESS';
+export const BUNDLE_FETCH_FAIL = 'BUNDLE_FETCH_FAIL';
+
+export function fetchBundleRequest(skipLoading) {
+  return {
+    type: BUNDLE_FETCH_REQUEST,
+    skipLoading,
+  };
+}
+
+export function fetchBundleSuccess(skipLoading) {
+  return {
+    type: BUNDLE_FETCH_SUCCESS,
+    skipLoading,
+  };
+}
+
+export function fetchBundleFail(error, skipLoading) {
+  return {
+    type: BUNDLE_FETCH_FAIL,
+    error,
+    skipLoading,
+  };
+}
diff --git a/app/javascript/mastodon/actions/cards.js b/app/javascript/mastodon/actions/cards.js
new file mode 100644
index 00000000000..baf04833a2c
--- /dev/null
+++ b/app/javascript/mastodon/actions/cards.js
@@ -0,0 +1,52 @@
+import api from '../api';
+
+export const STATUS_CARD_FETCH_REQUEST = 'STATUS_CARD_FETCH_REQUEST';
+export const STATUS_CARD_FETCH_SUCCESS = 'STATUS_CARD_FETCH_SUCCESS';
+export const STATUS_CARD_FETCH_FAIL    = 'STATUS_CARD_FETCH_FAIL';
+
+export function fetchStatusCard(id) {
+  return (dispatch, getState) => {
+    if (getState().getIn(['cards', id], null) !== null) {
+      return;
+    }
+
+    dispatch(fetchStatusCardRequest(id));
+
+    api(getState).get(`/api/v1/statuses/${id}/card`).then(response => {
+      if (!response.data.url) {
+        return;
+      }
+
+      dispatch(fetchStatusCardSuccess(id, response.data));
+    }).catch(error => {
+      dispatch(fetchStatusCardFail(id, error));
+    });
+  };
+};
+
+export function fetchStatusCardRequest(id) {
+  return {
+    type: STATUS_CARD_FETCH_REQUEST,
+    id,
+    skipLoading: true,
+  };
+};
+
+export function fetchStatusCardSuccess(id, card) {
+  return {
+    type: STATUS_CARD_FETCH_SUCCESS,
+    id,
+    card,
+    skipLoading: true,
+  };
+};
+
+export function fetchStatusCardFail(id, error) {
+  return {
+    type: STATUS_CARD_FETCH_FAIL,
+    id,
+    error,
+    skipLoading: true,
+    skipAlert: true,
+  };
+};
diff --git a/app/javascript/mastodon/actions/columns.js b/app/javascript/mastodon/actions/columns.js
new file mode 100644
index 00000000000..bcb0cdf9837
--- /dev/null
+++ b/app/javascript/mastodon/actions/columns.js
@@ -0,0 +1,40 @@
+import { saveSettings } from './settings';
+
+export const COLUMN_ADD    = 'COLUMN_ADD';
+export const COLUMN_REMOVE = 'COLUMN_REMOVE';
+export const COLUMN_MOVE   = 'COLUMN_MOVE';
+
+export function addColumn(id, params) {
+  return dispatch => {
+    dispatch({
+      type: COLUMN_ADD,
+      id,
+      params,
+    });
+
+    dispatch(saveSettings());
+  };
+};
+
+export function removeColumn(uuid) {
+  return dispatch => {
+    dispatch({
+      type: COLUMN_REMOVE,
+      uuid,
+    });
+
+    dispatch(saveSettings());
+  };
+};
+
+export function moveColumn(uuid, direction) {
+  return dispatch => {
+    dispatch({
+      type: COLUMN_MOVE,
+      uuid,
+      direction,
+    });
+
+    dispatch(saveSettings());
+  };
+};
diff --git a/app/javascript/mastodon/actions/compose.js b/app/javascript/mastodon/actions/compose.js
new file mode 100644
index 00000000000..8a35049b32c
--- /dev/null
+++ b/app/javascript/mastodon/actions/compose.js
@@ -0,0 +1,376 @@
+import api from '../api';
+import { throttle } from 'lodash';
+import { search as emojiSearch } from '../features/emoji/emoji_mart_search_light';
+import { useEmoji } from './emojis';
+
+import {
+  updateTimeline,
+  refreshHomeTimeline,
+  refreshCommunityTimeline,
+  refreshPublicTimeline,
+} from './timelines';
+
+export const COMPOSE_CHANGE          = 'COMPOSE_CHANGE';
+export const COMPOSE_SUBMIT_REQUEST  = 'COMPOSE_SUBMIT_REQUEST';
+export const COMPOSE_SUBMIT_SUCCESS  = 'COMPOSE_SUBMIT_SUCCESS';
+export const COMPOSE_SUBMIT_FAIL     = 'COMPOSE_SUBMIT_FAIL';
+export const COMPOSE_REPLY           = 'COMPOSE_REPLY';
+export const COMPOSE_REPLY_CANCEL    = 'COMPOSE_REPLY_CANCEL';
+export const COMPOSE_MENTION         = 'COMPOSE_MENTION';
+export const COMPOSE_RESET           = 'COMPOSE_RESET';
+export const COMPOSE_UPLOAD_REQUEST  = 'COMPOSE_UPLOAD_REQUEST';
+export const COMPOSE_UPLOAD_SUCCESS  = 'COMPOSE_UPLOAD_SUCCESS';
+export const COMPOSE_UPLOAD_FAIL     = 'COMPOSE_UPLOAD_FAIL';
+export const COMPOSE_UPLOAD_PROGRESS = 'COMPOSE_UPLOAD_PROGRESS';
+export const COMPOSE_UPLOAD_UNDO     = 'COMPOSE_UPLOAD_UNDO';
+
+export const COMPOSE_SUGGESTIONS_CLEAR = 'COMPOSE_SUGGESTIONS_CLEAR';
+export const COMPOSE_SUGGESTIONS_READY = 'COMPOSE_SUGGESTIONS_READY';
+export const COMPOSE_SUGGESTION_SELECT = 'COMPOSE_SUGGESTION_SELECT';
+
+export const COMPOSE_MOUNT   = 'COMPOSE_MOUNT';
+export const COMPOSE_UNMOUNT = 'COMPOSE_UNMOUNT';
+
+export const COMPOSE_SENSITIVITY_CHANGE = 'COMPOSE_SENSITIVITY_CHANGE';
+export const COMPOSE_SPOILERNESS_CHANGE = 'COMPOSE_SPOILERNESS_CHANGE';
+export const COMPOSE_SPOILER_TEXT_CHANGE = 'COMPOSE_SPOILER_TEXT_CHANGE';
+export const COMPOSE_VISIBILITY_CHANGE  = 'COMPOSE_VISIBILITY_CHANGE';
+export const COMPOSE_LISTABILITY_CHANGE = 'COMPOSE_LISTABILITY_CHANGE';
+export const COMPOSE_COMPOSING_CHANGE = 'COMPOSE_COMPOSING_CHANGE';
+
+export const COMPOSE_EMOJI_INSERT = 'COMPOSE_EMOJI_INSERT';
+
+export const COMPOSE_UPLOAD_CHANGE_REQUEST     = 'COMPOSE_UPLOAD_UPDATE_REQUEST';
+export const COMPOSE_UPLOAD_CHANGE_SUCCESS     = 'COMPOSE_UPLOAD_UPDATE_SUCCESS';
+export const COMPOSE_UPLOAD_CHANGE_FAIL        = 'COMPOSE_UPLOAD_UPDATE_FAIL';
+
+export function changeCompose(text) {
+  return {
+    type: COMPOSE_CHANGE,
+    text: text,
+  };
+};
+
+export function replyCompose(status, router) {
+  return (dispatch, getState) => {
+    dispatch({
+      type: COMPOSE_REPLY,
+      status: status,
+    });
+
+    if (!getState().getIn(['compose', 'mounted'])) {
+      router.push('/statuses/new');
+    }
+  };
+};
+
+export function cancelReplyCompose() {
+  return {
+    type: COMPOSE_REPLY_CANCEL,
+  };
+};
+
+export function resetCompose() {
+  return {
+    type: COMPOSE_RESET,
+  };
+};
+
+export function mentionCompose(account, router) {
+  return (dispatch, getState) => {
+    dispatch({
+      type: COMPOSE_MENTION,
+      account: account,
+    });
+
+    if (!getState().getIn(['compose', 'mounted'])) {
+      router.push('/statuses/new');
+    }
+  };
+};
+
+export function submitCompose() {
+  return function (dispatch, getState) {
+    const status = getState().getIn(['compose', 'text'], '');
+
+    if (!status || !status.length) {
+      return;
+    }
+
+    dispatch(submitComposeRequest());
+
+    api(getState).post('/api/v1/statuses', {
+      status,
+      in_reply_to_id: getState().getIn(['compose', 'in_reply_to'], null),
+      media_ids: getState().getIn(['compose', 'media_attachments']).map(item => item.get('id')),
+      sensitive: getState().getIn(['compose', 'sensitive']),
+      spoiler_text: getState().getIn(['compose', 'spoiler_text'], ''),
+      visibility: getState().getIn(['compose', 'privacy']),
+    }, {
+      headers: {
+        'Idempotency-Key': getState().getIn(['compose', 'idempotencyKey']),
+      },
+    }).then(function (response) {
+      dispatch(submitComposeSuccess({ ...response.data }));
+
+      // To make the app more responsive, immediately get the status into the columns
+
+      const insertOrRefresh = (timelineId, refreshAction) => {
+        if (getState().getIn(['timelines', timelineId, 'online'])) {
+          dispatch(updateTimeline(timelineId, { ...response.data }));
+        } else if (getState().getIn(['timelines', timelineId, 'loaded'])) {
+          dispatch(refreshAction());
+        }
+      };
+
+      insertOrRefresh('home', refreshHomeTimeline);
+
+      if (response.data.in_reply_to_id === null && response.data.visibility === 'public') {
+        insertOrRefresh('community', refreshCommunityTimeline);
+        insertOrRefresh('public', refreshPublicTimeline);
+      }
+    }).catch(function (error) {
+      dispatch(submitComposeFail(error));
+    });
+  };
+};
+
+export function submitComposeRequest() {
+  return {
+    type: COMPOSE_SUBMIT_REQUEST,
+  };
+};
+
+export function submitComposeSuccess(status) {
+  return {
+    type: COMPOSE_SUBMIT_SUCCESS,
+    status: status,
+  };
+};
+
+export function submitComposeFail(error) {
+  return {
+    type: COMPOSE_SUBMIT_FAIL,
+    error: error,
+  };
+};
+
+export function uploadCompose(files) {
+  return function (dispatch, getState) {
+    if (getState().getIn(['compose', 'media_attachments']).size > 3) {
+      return;
+    }
+
+    dispatch(uploadComposeRequest());
+
+    let data = new FormData();
+    data.append('file', files[0]);
+
+    api(getState).post('/api/v1/media', data, {
+      onUploadProgress: function (e) {
+        dispatch(uploadComposeProgress(e.loaded, e.total));
+      },
+    }).then(function (response) {
+      dispatch(uploadComposeSuccess(response.data));
+    }).catch(function (error) {
+      dispatch(uploadComposeFail(error));
+    });
+  };
+};
+
+export function changeUploadCompose(id, description) {
+  return (dispatch, getState) => {
+    dispatch(changeUploadComposeRequest());
+
+    api(getState).put(`/api/v1/media/${id}`, { description }).then(response => {
+      dispatch(changeUploadComposeSuccess(response.data));
+    }).catch(error => {
+      dispatch(changeUploadComposeFail(id, error));
+    });
+  };
+};
+
+export function changeUploadComposeRequest() {
+  return {
+    type: COMPOSE_UPLOAD_CHANGE_REQUEST,
+    skipLoading: true,
+  };
+};
+export function changeUploadComposeSuccess(media) {
+  return {
+    type: COMPOSE_UPLOAD_CHANGE_SUCCESS,
+    media: media,
+    skipLoading: true,
+  };
+};
+
+export function changeUploadComposeFail(error) {
+  return {
+    type: COMPOSE_UPLOAD_CHANGE_FAIL,
+    error: error,
+    skipLoading: true,
+  };
+};
+
+export function uploadComposeRequest() {
+  return {
+    type: COMPOSE_UPLOAD_REQUEST,
+    skipLoading: true,
+  };
+};
+
+export function uploadComposeProgress(loaded, total) {
+  return {
+    type: COMPOSE_UPLOAD_PROGRESS,
+    loaded: loaded,
+    total: total,
+  };
+};
+
+export function uploadComposeSuccess(media) {
+  return {
+    type: COMPOSE_UPLOAD_SUCCESS,
+    media: media,
+    skipLoading: true,
+  };
+};
+
+export function uploadComposeFail(error) {
+  return {
+    type: COMPOSE_UPLOAD_FAIL,
+    error: error,
+    skipLoading: true,
+  };
+};
+
+export function undoUploadCompose(media_id) {
+  return {
+    type: COMPOSE_UPLOAD_UNDO,
+    media_id: media_id,
+  };
+};
+
+export function clearComposeSuggestions() {
+  return {
+    type: COMPOSE_SUGGESTIONS_CLEAR,
+  };
+};
+
+const fetchComposeSuggestionsAccounts = throttle((dispatch, getState, token) => {
+  api(getState).get('/api/v1/accounts/search', {
+    params: {
+      q: token.slice(1),
+      resolve: false,
+      limit: 4,
+    },
+  }).then(response => {
+    dispatch(readyComposeSuggestionsAccounts(token, response.data));
+  });
+}, 200, { leading: true, trailing: true });
+
+const fetchComposeSuggestionsEmojis = (dispatch, getState, token) => {
+  const results = emojiSearch(token.replace(':', ''), { maxResults: 5 });
+  dispatch(readyComposeSuggestionsEmojis(token, results));
+};
+
+export function fetchComposeSuggestions(token) {
+  return (dispatch, getState) => {
+    if (token[0] === ':') {
+      fetchComposeSuggestionsEmojis(dispatch, getState, token);
+    } else {
+      fetchComposeSuggestionsAccounts(dispatch, getState, token);
+    }
+  };
+};
+
+export function readyComposeSuggestionsEmojis(token, emojis) {
+  return {
+    type: COMPOSE_SUGGESTIONS_READY,
+    token,
+    emojis,
+  };
+};
+
+export function readyComposeSuggestionsAccounts(token, accounts) {
+  return {
+    type: COMPOSE_SUGGESTIONS_READY,
+    token,
+    accounts,
+  };
+};
+
+export function selectComposeSuggestion(position, token, suggestion) {
+  return (dispatch, getState) => {
+    let completion, startPosition;
+
+    if (typeof suggestion === 'object' && suggestion.id) {
+      completion    = suggestion.native || suggestion.colons;
+      startPosition = position - 1;
+
+      dispatch(useEmoji(suggestion));
+    } else {
+      completion    = getState().getIn(['accounts', suggestion, 'acct']);
+      startPosition = position;
+    }
+
+    dispatch({
+      type: COMPOSE_SUGGESTION_SELECT,
+      position: startPosition,
+      token,
+      completion,
+    });
+  };
+};
+
+export function mountCompose() {
+  return {
+    type: COMPOSE_MOUNT,
+  };
+};
+
+export function unmountCompose() {
+  return {
+    type: COMPOSE_UNMOUNT,
+  };
+};
+
+export function changeComposeSensitivity() {
+  return {
+    type: COMPOSE_SENSITIVITY_CHANGE,
+  };
+};
+
+export function changeComposeSpoilerness() {
+  return {
+    type: COMPOSE_SPOILERNESS_CHANGE,
+  };
+};
+
+export function changeComposeSpoilerText(text) {
+  return {
+    type: COMPOSE_SPOILER_TEXT_CHANGE,
+    text,
+  };
+};
+
+export function changeComposeVisibility(value) {
+  return {
+    type: COMPOSE_VISIBILITY_CHANGE,
+    value,
+  };
+};
+
+export function insertEmojiCompose(position, emoji) {
+  return {
+    type: COMPOSE_EMOJI_INSERT,
+    position,
+    emoji,
+  };
+};
+
+export function changeComposing(value) {
+  return {
+    type: COMPOSE_COMPOSING_CHANGE,
+    value,
+  };
+}
diff --git a/app/javascript/mastodon/actions/domain_blocks.js b/app/javascript/mastodon/actions/domain_blocks.js
new file mode 100644
index 00000000000..44363697a95
--- /dev/null
+++ b/app/javascript/mastodon/actions/domain_blocks.js
@@ -0,0 +1,117 @@
+import api, { getLinks } from '../api';
+
+export const DOMAIN_BLOCK_REQUEST = 'DOMAIN_BLOCK_REQUEST';
+export const DOMAIN_BLOCK_SUCCESS = 'DOMAIN_BLOCK_SUCCESS';
+export const DOMAIN_BLOCK_FAIL    = 'DOMAIN_BLOCK_FAIL';
+
+export const DOMAIN_UNBLOCK_REQUEST = 'DOMAIN_UNBLOCK_REQUEST';
+export const DOMAIN_UNBLOCK_SUCCESS = 'DOMAIN_UNBLOCK_SUCCESS';
+export const DOMAIN_UNBLOCK_FAIL    = 'DOMAIN_UNBLOCK_FAIL';
+
+export const DOMAIN_BLOCKS_FETCH_REQUEST = 'DOMAIN_BLOCKS_FETCH_REQUEST';
+export const DOMAIN_BLOCKS_FETCH_SUCCESS = 'DOMAIN_BLOCKS_FETCH_SUCCESS';
+export const DOMAIN_BLOCKS_FETCH_FAIL    = 'DOMAIN_BLOCKS_FETCH_FAIL';
+
+export function blockDomain(domain, accountId) {
+  return (dispatch, getState) => {
+    dispatch(blockDomainRequest(domain));
+
+    api(getState).post('/api/v1/domain_blocks', { domain }).then(() => {
+      dispatch(blockDomainSuccess(domain, accountId));
+    }).catch(err => {
+      dispatch(blockDomainFail(domain, err));
+    });
+  };
+};
+
+export function blockDomainRequest(domain) {
+  return {
+    type: DOMAIN_BLOCK_REQUEST,
+    domain,
+  };
+};
+
+export function blockDomainSuccess(domain, accountId) {
+  return {
+    type: DOMAIN_BLOCK_SUCCESS,
+    domain,
+    accountId,
+  };
+};
+
+export function blockDomainFail(domain, error) {
+  return {
+    type: DOMAIN_BLOCK_FAIL,
+    domain,
+    error,
+  };
+};
+
+export function unblockDomain(domain, accountId) {
+  return (dispatch, getState) => {
+    dispatch(unblockDomainRequest(domain));
+
+    api(getState).delete('/api/v1/domain_blocks', { params: { domain } }).then(() => {
+      dispatch(unblockDomainSuccess(domain, accountId));
+    }).catch(err => {
+      dispatch(unblockDomainFail(domain, err));
+    });
+  };
+};
+
+export function unblockDomainRequest(domain) {
+  return {
+    type: DOMAIN_UNBLOCK_REQUEST,
+    domain,
+  };
+};
+
+export function unblockDomainSuccess(domain, accountId) {
+  return {
+    type: DOMAIN_UNBLOCK_SUCCESS,
+    domain,
+    accountId,
+  };
+};
+
+export function unblockDomainFail(domain, error) {
+  return {
+    type: DOMAIN_UNBLOCK_FAIL,
+    domain,
+    error,
+  };
+};
+
+export function fetchDomainBlocks() {
+  return (dispatch, getState) => {
+    dispatch(fetchDomainBlocksRequest());
+
+    api(getState).get().then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(fetchDomainBlocksSuccess(response.data, next ? next.uri : null));
+    }).catch(err => {
+      dispatch(fetchDomainBlocksFail(err));
+    });
+  };
+};
+
+export function fetchDomainBlocksRequest() {
+  return {
+    type: DOMAIN_BLOCKS_FETCH_REQUEST,
+  };
+};
+
+export function fetchDomainBlocksSuccess(domains, next) {
+  return {
+    type: DOMAIN_BLOCKS_FETCH_SUCCESS,
+    domains,
+    next,
+  };
+};
+
+export function fetchDomainBlocksFail(error) {
+  return {
+    type: DOMAIN_BLOCKS_FETCH_FAIL,
+    error,
+  };
+};
diff --git a/app/javascript/mastodon/actions/emojis.js b/app/javascript/mastodon/actions/emojis.js
new file mode 100644
index 00000000000..7cd9d4b7b35
--- /dev/null
+++ b/app/javascript/mastodon/actions/emojis.js
@@ -0,0 +1,14 @@
+import { saveSettings } from './settings';
+
+export const EMOJI_USE = 'EMOJI_USE';
+
+export function useEmoji(emoji) {
+  return dispatch => {
+    dispatch({
+      type: EMOJI_USE,
+      emoji,
+    });
+
+    dispatch(saveSettings());
+  };
+};
diff --git a/app/javascript/mastodon/actions/favourites.js b/app/javascript/mastodon/actions/favourites.js
new file mode 100644
index 00000000000..09ce51fceb3
--- /dev/null
+++ b/app/javascript/mastodon/actions/favourites.js
@@ -0,0 +1,83 @@
+import api, { getLinks } from '../api';
+
+export const FAVOURITED_STATUSES_FETCH_REQUEST = 'FAVOURITED_STATUSES_FETCH_REQUEST';
+export const FAVOURITED_STATUSES_FETCH_SUCCESS = 'FAVOURITED_STATUSES_FETCH_SUCCESS';
+export const FAVOURITED_STATUSES_FETCH_FAIL    = 'FAVOURITED_STATUSES_FETCH_FAIL';
+
+export const FAVOURITED_STATUSES_EXPAND_REQUEST = 'FAVOURITED_STATUSES_EXPAND_REQUEST';
+export const FAVOURITED_STATUSES_EXPAND_SUCCESS = 'FAVOURITED_STATUSES_EXPAND_SUCCESS';
+export const FAVOURITED_STATUSES_EXPAND_FAIL    = 'FAVOURITED_STATUSES_EXPAND_FAIL';
+
+export function fetchFavouritedStatuses() {
+  return (dispatch, getState) => {
+    dispatch(fetchFavouritedStatusesRequest());
+
+    api(getState).get('/api/v1/favourites').then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(fetchFavouritedStatusesSuccess(response.data, next ? next.uri : null));
+    }).catch(error => {
+      dispatch(fetchFavouritedStatusesFail(error));
+    });
+  };
+};
+
+export function fetchFavouritedStatusesRequest() {
+  return {
+    type: FAVOURITED_STATUSES_FETCH_REQUEST,
+  };
+};
+
+export function fetchFavouritedStatusesSuccess(statuses, next) {
+  return {
+    type: FAVOURITED_STATUSES_FETCH_SUCCESS,
+    statuses,
+    next,
+  };
+};
+
+export function fetchFavouritedStatusesFail(error) {
+  return {
+    type: FAVOURITED_STATUSES_FETCH_FAIL,
+    error,
+  };
+};
+
+export function expandFavouritedStatuses() {
+  return (dispatch, getState) => {
+    const url = getState().getIn(['status_lists', 'favourites', 'next'], null);
+
+    if (url === null) {
+      return;
+    }
+
+    dispatch(expandFavouritedStatusesRequest());
+
+    api(getState).get(url).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(expandFavouritedStatusesSuccess(response.data, next ? next.uri : null));
+    }).catch(error => {
+      dispatch(expandFavouritedStatusesFail(error));
+    });
+  };
+};
+
+export function expandFavouritedStatusesRequest() {
+  return {
+    type: FAVOURITED_STATUSES_EXPAND_REQUEST,
+  };
+};
+
+export function expandFavouritedStatusesSuccess(statuses, next) {
+  return {
+    type: FAVOURITED_STATUSES_EXPAND_SUCCESS,
+    statuses,
+    next,
+  };
+};
+
+export function expandFavouritedStatusesFail(error) {
+  return {
+    type: FAVOURITED_STATUSES_EXPAND_FAIL,
+    error,
+  };
+};
diff --git a/app/javascript/mastodon/actions/height_cache.js b/app/javascript/mastodon/actions/height_cache.js
new file mode 100644
index 00000000000..4c752993feb
--- /dev/null
+++ b/app/javascript/mastodon/actions/height_cache.js
@@ -0,0 +1,17 @@
+export const HEIGHT_CACHE_SET = 'HEIGHT_CACHE_SET';
+export const HEIGHT_CACHE_CLEAR = 'HEIGHT_CACHE_CLEAR';
+
+export function setHeight (key, id, height) {
+  return {
+    type: HEIGHT_CACHE_SET,
+    key,
+    id,
+    height,
+  };
+};
+
+export function clearHeight () {
+  return {
+    type: HEIGHT_CACHE_CLEAR,
+  };
+};
diff --git a/app/javascript/mastodon/actions/interactions.js b/app/javascript/mastodon/actions/interactions.js
new file mode 100644
index 00000000000..7b5f4bd9c18
--- /dev/null
+++ b/app/javascript/mastodon/actions/interactions.js
@@ -0,0 +1,313 @@
+import api from '../api';
+
+export const REBLOG_REQUEST = 'REBLOG_REQUEST';
+export const REBLOG_SUCCESS = 'REBLOG_SUCCESS';
+export const REBLOG_FAIL    = 'REBLOG_FAIL';
+
+export const FAVOURITE_REQUEST = 'FAVOURITE_REQUEST';
+export const FAVOURITE_SUCCESS = 'FAVOURITE_SUCCESS';
+export const FAVOURITE_FAIL    = 'FAVOURITE_FAIL';
+
+export const UNREBLOG_REQUEST = 'UNREBLOG_REQUEST';
+export const UNREBLOG_SUCCESS = 'UNREBLOG_SUCCESS';
+export const UNREBLOG_FAIL    = 'UNREBLOG_FAIL';
+
+export const UNFAVOURITE_REQUEST = 'UNFAVOURITE_REQUEST';
+export const UNFAVOURITE_SUCCESS = 'UNFAVOURITE_SUCCESS';
+export const UNFAVOURITE_FAIL    = 'UNFAVOURITE_FAIL';
+
+export const REBLOGS_FETCH_REQUEST = 'REBLOGS_FETCH_REQUEST';
+export const REBLOGS_FETCH_SUCCESS = 'REBLOGS_FETCH_SUCCESS';
+export const REBLOGS_FETCH_FAIL    = 'REBLOGS_FETCH_FAIL';
+
+export const FAVOURITES_FETCH_REQUEST = 'FAVOURITES_FETCH_REQUEST';
+export const FAVOURITES_FETCH_SUCCESS = 'FAVOURITES_FETCH_SUCCESS';
+export const FAVOURITES_FETCH_FAIL    = 'FAVOURITES_FETCH_FAIL';
+
+export const PIN_REQUEST = 'PIN_REQUEST';
+export const PIN_SUCCESS = 'PIN_SUCCESS';
+export const PIN_FAIL    = 'PIN_FAIL';
+
+export const UNPIN_REQUEST = 'UNPIN_REQUEST';
+export const UNPIN_SUCCESS = 'UNPIN_SUCCESS';
+export const UNPIN_FAIL    = 'UNPIN_FAIL';
+
+export function reblog(status) {
+  return function (dispatch, getState) {
+    dispatch(reblogRequest(status));
+
+    api(getState).post(`/api/v1/statuses/${status.get('id')}/reblog`).then(function (response) {
+      // The reblog API method returns a new status wrapped around the original. In this case we are only
+      // interested in how the original is modified, hence passing it skipping the wrapper
+      dispatch(reblogSuccess(status, response.data.reblog));
+    }).catch(function (error) {
+      dispatch(reblogFail(status, error));
+    });
+  };
+};
+
+export function unreblog(status) {
+  return (dispatch, getState) => {
+    dispatch(unreblogRequest(status));
+
+    api(getState).post(`/api/v1/statuses/${status.get('id')}/unreblog`).then(response => {
+      dispatch(unreblogSuccess(status, response.data));
+    }).catch(error => {
+      dispatch(unreblogFail(status, error));
+    });
+  };
+};
+
+export function reblogRequest(status) {
+  return {
+    type: REBLOG_REQUEST,
+    status: status,
+  };
+};
+
+export function reblogSuccess(status, response) {
+  return {
+    type: REBLOG_SUCCESS,
+    status: status,
+    response: response,
+  };
+};
+
+export function reblogFail(status, error) {
+  return {
+    type: REBLOG_FAIL,
+    status: status,
+    error: error,
+  };
+};
+
+export function unreblogRequest(status) {
+  return {
+    type: UNREBLOG_REQUEST,
+    status: status,
+  };
+};
+
+export function unreblogSuccess(status, response) {
+  return {
+    type: UNREBLOG_SUCCESS,
+    status: status,
+    response: response,
+  };
+};
+
+export function unreblogFail(status, error) {
+  return {
+    type: UNREBLOG_FAIL,
+    status: status,
+    error: error,
+  };
+};
+
+export function favourite(status) {
+  return function (dispatch, getState) {
+    dispatch(favouriteRequest(status));
+
+    api(getState).post(`/api/v1/statuses/${status.get('id')}/favourite`).then(function (response) {
+      dispatch(favouriteSuccess(status, response.data));
+    }).catch(function (error) {
+      dispatch(favouriteFail(status, error));
+    });
+  };
+};
+
+export function unfavourite(status) {
+  return (dispatch, getState) => {
+    dispatch(unfavouriteRequest(status));
+
+    api(getState).post(`/api/v1/statuses/${status.get('id')}/unfavourite`).then(response => {
+      dispatch(unfavouriteSuccess(status, response.data));
+    }).catch(error => {
+      dispatch(unfavouriteFail(status, error));
+    });
+  };
+};
+
+export function favouriteRequest(status) {
+  return {
+    type: FAVOURITE_REQUEST,
+    status: status,
+  };
+};
+
+export function favouriteSuccess(status, response) {
+  return {
+    type: FAVOURITE_SUCCESS,
+    status: status,
+    response: response,
+  };
+};
+
+export function favouriteFail(status, error) {
+  return {
+    type: FAVOURITE_FAIL,
+    status: status,
+    error: error,
+  };
+};
+
+export function unfavouriteRequest(status) {
+  return {
+    type: UNFAVOURITE_REQUEST,
+    status: status,
+  };
+};
+
+export function unfavouriteSuccess(status, response) {
+  return {
+    type: UNFAVOURITE_SUCCESS,
+    status: status,
+    response: response,
+  };
+};
+
+export function unfavouriteFail(status, error) {
+  return {
+    type: UNFAVOURITE_FAIL,
+    status: status,
+    error: error,
+  };
+};
+
+export function fetchReblogs(id) {
+  return (dispatch, getState) => {
+    dispatch(fetchReblogsRequest(id));
+
+    api(getState).get(`/api/v1/statuses/${id}/reblogged_by`).then(response => {
+      dispatch(fetchReblogsSuccess(id, response.data));
+    }).catch(error => {
+      dispatch(fetchReblogsFail(id, error));
+    });
+  };
+};
+
+export function fetchReblogsRequest(id) {
+  return {
+    type: REBLOGS_FETCH_REQUEST,
+    id,
+  };
+};
+
+export function fetchReblogsSuccess(id, accounts) {
+  return {
+    type: REBLOGS_FETCH_SUCCESS,
+    id,
+    accounts,
+  };
+};
+
+export function fetchReblogsFail(id, error) {
+  return {
+    type: REBLOGS_FETCH_FAIL,
+    error,
+  };
+};
+
+export function fetchFavourites(id) {
+  return (dispatch, getState) => {
+    dispatch(fetchFavouritesRequest(id));
+
+    api(getState).get(`/api/v1/statuses/${id}/favourited_by`).then(response => {
+      dispatch(fetchFavouritesSuccess(id, response.data));
+    }).catch(error => {
+      dispatch(fetchFavouritesFail(id, error));
+    });
+  };
+};
+
+export function fetchFavouritesRequest(id) {
+  return {
+    type: FAVOURITES_FETCH_REQUEST,
+    id,
+  };
+};
+
+export function fetchFavouritesSuccess(id, accounts) {
+  return {
+    type: FAVOURITES_FETCH_SUCCESS,
+    id,
+    accounts,
+  };
+};
+
+export function fetchFavouritesFail(id, error) {
+  return {
+    type: FAVOURITES_FETCH_FAIL,
+    error,
+  };
+};
+
+export function pin(status) {
+  return (dispatch, getState) => {
+    dispatch(pinRequest(status));
+
+    api(getState).post(`/api/v1/statuses/${status.get('id')}/pin`).then(response => {
+      dispatch(pinSuccess(status, response.data));
+    }).catch(error => {
+      dispatch(pinFail(status, error));
+    });
+  };
+};
+
+export function pinRequest(status) {
+  return {
+    type: PIN_REQUEST,
+    status,
+  };
+};
+
+export function pinSuccess(status, response) {
+  return {
+    type: PIN_SUCCESS,
+    status,
+    response,
+  };
+};
+
+export function pinFail(status, error) {
+  return {
+    type: PIN_FAIL,
+    status,
+    error,
+  };
+};
+
+export function unpin (status) {
+  return (dispatch, getState) => {
+    dispatch(unpinRequest(status));
+
+    api(getState).post(`/api/v1/statuses/${status.get('id')}/unpin`).then(response => {
+      dispatch(unpinSuccess(status, response.data));
+    }).catch(error => {
+      dispatch(unpinFail(status, error));
+    });
+  };
+};
+
+export function unpinRequest(status) {
+  return {
+    type: UNPIN_REQUEST,
+    status,
+  };
+};
+
+export function unpinSuccess(status, response) {
+  return {
+    type: UNPIN_SUCCESS,
+    status,
+    response,
+  };
+};
+
+export function unpinFail(status, error) {
+  return {
+    type: UNPIN_FAIL,
+    status,
+    error,
+  };
+};
diff --git a/app/javascript/mastodon/actions/modal.js b/app/javascript/mastodon/actions/modal.js
new file mode 100644
index 00000000000..80e15c28ec1
--- /dev/null
+++ b/app/javascript/mastodon/actions/modal.js
@@ -0,0 +1,16 @@
+export const MODAL_OPEN  = 'MODAL_OPEN';
+export const MODAL_CLOSE = 'MODAL_CLOSE';
+
+export function openModal(type, props) {
+  return {
+    type: MODAL_OPEN,
+    modalType: type,
+    modalProps: props,
+  };
+};
+
+export function closeModal() {
+  return {
+    type: MODAL_CLOSE,
+  };
+};
diff --git a/app/javascript/mastodon/actions/mutes.js b/app/javascript/mastodon/actions/mutes.js
new file mode 100644
index 00000000000..3474250feb3
--- /dev/null
+++ b/app/javascript/mastodon/actions/mutes.js
@@ -0,0 +1,103 @@
+import api, { getLinks } from '../api';
+import { fetchRelationships } from './accounts';
+import { openModal } from '../../mastodon/actions/modal';
+
+export const MUTES_FETCH_REQUEST = 'MUTES_FETCH_REQUEST';
+export const MUTES_FETCH_SUCCESS = 'MUTES_FETCH_SUCCESS';
+export const MUTES_FETCH_FAIL    = 'MUTES_FETCH_FAIL';
+
+export const MUTES_EXPAND_REQUEST = 'MUTES_EXPAND_REQUEST';
+export const MUTES_EXPAND_SUCCESS = 'MUTES_EXPAND_SUCCESS';
+export const MUTES_EXPAND_FAIL    = 'MUTES_EXPAND_FAIL';
+
+export const MUTES_INIT_MODAL = 'MUTES_INIT_MODAL';
+export const MUTES_TOGGLE_HIDE_NOTIFICATIONS = 'MUTES_TOGGLE_HIDE_NOTIFICATIONS';
+
+export function fetchMutes() {
+  return (dispatch, getState) => {
+    dispatch(fetchMutesRequest());
+
+    api(getState).get('/api/v1/mutes').then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(fetchMutesSuccess(response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => dispatch(fetchMutesFail(error)));
+  };
+};
+
+export function fetchMutesRequest() {
+  return {
+    type: MUTES_FETCH_REQUEST,
+  };
+};
+
+export function fetchMutesSuccess(accounts, next) {
+  return {
+    type: MUTES_FETCH_SUCCESS,
+    accounts,
+    next,
+  };
+};
+
+export function fetchMutesFail(error) {
+  return {
+    type: MUTES_FETCH_FAIL,
+    error,
+  };
+};
+
+export function expandMutes() {
+  return (dispatch, getState) => {
+    const url = getState().getIn(['user_lists', 'mutes', 'next']);
+
+    if (url === null) {
+      return;
+    }
+
+    dispatch(expandMutesRequest());
+
+    api(getState).get(url).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(expandMutesSuccess(response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => dispatch(expandMutesFail(error)));
+  };
+};
+
+export function expandMutesRequest() {
+  return {
+    type: MUTES_EXPAND_REQUEST,
+  };
+};
+
+export function expandMutesSuccess(accounts, next) {
+  return {
+    type: MUTES_EXPAND_SUCCESS,
+    accounts,
+    next,
+  };
+};
+
+export function expandMutesFail(error) {
+  return {
+    type: MUTES_EXPAND_FAIL,
+    error,
+  };
+};
+
+export function initMuteModal(account) {
+  return dispatch => {
+    dispatch({
+      type: MUTES_INIT_MODAL,
+      account,
+    });
+
+    dispatch(openModal('MUTE'));
+  };
+}
+
+export function toggleHideNotifications() {
+  return dispatch => {
+    dispatch({ type: MUTES_TOGGLE_HIDE_NOTIFICATIONS });
+  };
+}
\ No newline at end of file
diff --git a/app/javascript/mastodon/actions/notifications.js b/app/javascript/mastodon/actions/notifications.js
new file mode 100644
index 00000000000..b24ac8b7338
--- /dev/null
+++ b/app/javascript/mastodon/actions/notifications.js
@@ -0,0 +1,190 @@
+import api, { getLinks } from '../api';
+import { List as ImmutableList } from 'immutable';
+import IntlMessageFormat from 'intl-messageformat';
+import { fetchRelationships } from './accounts';
+import { defineMessages } from 'react-intl';
+
+export const NOTIFICATIONS_UPDATE = 'NOTIFICATIONS_UPDATE';
+
+export const NOTIFICATIONS_REFRESH_REQUEST = 'NOTIFICATIONS_REFRESH_REQUEST';
+export const NOTIFICATIONS_REFRESH_SUCCESS = 'NOTIFICATIONS_REFRESH_SUCCESS';
+export const NOTIFICATIONS_REFRESH_FAIL    = 'NOTIFICATIONS_REFRESH_FAIL';
+
+export const NOTIFICATIONS_EXPAND_REQUEST = 'NOTIFICATIONS_EXPAND_REQUEST';
+export const NOTIFICATIONS_EXPAND_SUCCESS = 'NOTIFICATIONS_EXPAND_SUCCESS';
+export const NOTIFICATIONS_EXPAND_FAIL    = 'NOTIFICATIONS_EXPAND_FAIL';
+
+export const NOTIFICATIONS_CLEAR      = 'NOTIFICATIONS_CLEAR';
+export const NOTIFICATIONS_SCROLL_TOP = 'NOTIFICATIONS_SCROLL_TOP';
+
+defineMessages({
+  mention: { id: 'notification.mention', defaultMessage: '{name} mentioned you' },
+});
+
+const fetchRelatedRelationships = (dispatch, notifications) => {
+  const accountIds = notifications.filter(item => item.type === 'follow').map(item => item.account.id);
+
+  if (accountIds > 0) {
+    dispatch(fetchRelationships(accountIds));
+  }
+};
+
+const unescapeHTML = (html) => {
+  const wrapper = document.createElement('div');
+  html = html.replace(/<br \/>|<br>|\n/, ' ');
+  wrapper.innerHTML = html;
+  return wrapper.textContent;
+};
+
+export function updateNotifications(notification, intlMessages, intlLocale) {
+  return (dispatch, getState) => {
+    const showAlert = getState().getIn(['settings', 'notifications', 'alerts', notification.type], true);
+    const playSound = getState().getIn(['settings', 'notifications', 'sounds', notification.type], true);
+
+    dispatch({
+      type: NOTIFICATIONS_UPDATE,
+      notification,
+      account: notification.account,
+      status: notification.status,
+      meta: playSound ? { sound: 'boop' } : undefined,
+    });
+
+    fetchRelatedRelationships(dispatch, [notification]);
+
+    // Desktop notifications
+    if (typeof window.Notification !== 'undefined' && showAlert) {
+      const title = new IntlMessageFormat(intlMessages[`notification.${notification.type}`], intlLocale).format({ name: notification.account.display_name.length > 0 ? notification.account.display_name : notification.account.username });
+      const body  = (notification.status && notification.status.spoiler_text.length > 0) ? notification.status.spoiler_text : unescapeHTML(notification.status ? notification.status.content : '');
+
+      const notify = new Notification(title, { body, icon: notification.account.avatar, tag: notification.id });
+      notify.addEventListener('click', () => {
+        window.focus();
+        notify.close();
+      });
+    }
+  };
+};
+
+const excludeTypesFromSettings = state => state.getIn(['settings', 'notifications', 'shows']).filter(enabled => !enabled).keySeq().toJS();
+
+export function refreshNotifications() {
+  return (dispatch, getState) => {
+    const params = {};
+    const ids    = getState().getIn(['notifications', 'items']);
+
+    let skipLoading = false;
+
+    if (ids.size > 0) {
+      params.since_id = ids.first().get('id');
+    }
+
+    if (getState().getIn(['notifications', 'loaded'])) {
+      skipLoading = true;
+    }
+
+    params.exclude_types = excludeTypesFromSettings(getState());
+
+    dispatch(refreshNotificationsRequest(skipLoading));
+
+    api(getState).get('/api/v1/notifications', { params }).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+
+      dispatch(refreshNotificationsSuccess(response.data, skipLoading, next ? next.uri : null));
+      fetchRelatedRelationships(dispatch, response.data);
+    }).catch(error => {
+      dispatch(refreshNotificationsFail(error, skipLoading));
+    });
+  };
+};
+
+export function refreshNotificationsRequest(skipLoading) {
+  return {
+    type: NOTIFICATIONS_REFRESH_REQUEST,
+    skipLoading,
+  };
+};
+
+export function refreshNotificationsSuccess(notifications, skipLoading, next) {
+  return {
+    type: NOTIFICATIONS_REFRESH_SUCCESS,
+    notifications,
+    accounts: notifications.map(item => item.account),
+    statuses: notifications.map(item => item.status).filter(status => !!status),
+    skipLoading,
+    next,
+  };
+};
+
+export function refreshNotificationsFail(error, skipLoading) {
+  return {
+    type: NOTIFICATIONS_REFRESH_FAIL,
+    error,
+    skipLoading,
+  };
+};
+
+export function expandNotifications() {
+  return (dispatch, getState) => {
+    const items  = getState().getIn(['notifications', 'items'], ImmutableList());
+
+    if (getState().getIn(['notifications', 'isLoading']) || items.size === 0) {
+      return;
+    }
+
+    const params = {
+      max_id: items.last().get('id'),
+      limit: 20,
+      exclude_types: excludeTypesFromSettings(getState()),
+    };
+
+    dispatch(expandNotificationsRequest());
+
+    api(getState).get('/api/v1/notifications', { params }).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(expandNotificationsSuccess(response.data, next ? next.uri : null));
+      fetchRelatedRelationships(dispatch, response.data);
+    }).catch(error => {
+      dispatch(expandNotificationsFail(error));
+    });
+  };
+};
+
+export function expandNotificationsRequest() {
+  return {
+    type: NOTIFICATIONS_EXPAND_REQUEST,
+  };
+};
+
+export function expandNotificationsSuccess(notifications, next) {
+  return {
+    type: NOTIFICATIONS_EXPAND_SUCCESS,
+    notifications,
+    accounts: notifications.map(item => item.account),
+    statuses: notifications.map(item => item.status).filter(status => !!status),
+    next,
+  };
+};
+
+export function expandNotificationsFail(error) {
+  return {
+    type: NOTIFICATIONS_EXPAND_FAIL,
+    error,
+  };
+};
+
+export function clearNotifications() {
+  return (dispatch, getState) => {
+    dispatch({
+      type: NOTIFICATIONS_CLEAR,
+    });
+
+    api(getState).post('/api/v1/notifications/clear');
+  };
+};
+
+export function scrollTopNotifications(top) {
+  return {
+    type: NOTIFICATIONS_SCROLL_TOP,
+    top,
+  };
+};
diff --git a/app/javascript/mastodon/actions/onboarding.js b/app/javascript/mastodon/actions/onboarding.js
new file mode 100644
index 00000000000..a161c50efed
--- /dev/null
+++ b/app/javascript/mastodon/actions/onboarding.js
@@ -0,0 +1,14 @@
+import { openModal } from './modal';
+import { changeSetting, saveSettings } from './settings';
+
+export function showOnboardingOnce() {
+  return (dispatch, getState) => {
+    const alreadySeen = getState().getIn(['settings', 'onboarded']);
+
+    if (!alreadySeen) {
+      dispatch(openModal('ONBOARDING'));
+      dispatch(changeSetting(['onboarded'], true));
+      dispatch(saveSettings());
+    }
+  };
+};
diff --git a/app/javascript/mastodon/actions/pin_statuses.js b/app/javascript/mastodon/actions/pin_statuses.js
new file mode 100644
index 00000000000..3f40f6c2d55
--- /dev/null
+++ b/app/javascript/mastodon/actions/pin_statuses.js
@@ -0,0 +1,40 @@
+import api from '../api';
+
+export const PINNED_STATUSES_FETCH_REQUEST = 'PINNED_STATUSES_FETCH_REQUEST';
+export const PINNED_STATUSES_FETCH_SUCCESS = 'PINNED_STATUSES_FETCH_SUCCESS';
+export const PINNED_STATUSES_FETCH_FAIL = 'PINNED_STATUSES_FETCH_FAIL';
+
+import { me } from '../initial_state';
+
+export function fetchPinnedStatuses() {
+  return (dispatch, getState) => {
+    dispatch(fetchPinnedStatusesRequest());
+
+    api(getState).get(`/api/v1/accounts/${me}/statuses`, { params: { pinned: true } }).then(response => {
+      dispatch(fetchPinnedStatusesSuccess(response.data, null));
+    }).catch(error => {
+      dispatch(fetchPinnedStatusesFail(error));
+    });
+  };
+};
+
+export function fetchPinnedStatusesRequest() {
+  return {
+    type: PINNED_STATUSES_FETCH_REQUEST,
+  };
+};
+
+export function fetchPinnedStatusesSuccess(statuses, next) {
+  return {
+    type: PINNED_STATUSES_FETCH_SUCCESS,
+    statuses,
+    next,
+  };
+};
+
+export function fetchPinnedStatusesFail(error) {
+  return {
+    type: PINNED_STATUSES_FETCH_FAIL,
+    error,
+  };
+};
diff --git a/app/javascript/mastodon/actions/push_notifications.js b/app/javascript/mastodon/actions/push_notifications.js
new file mode 100644
index 00000000000..55661d2b090
--- /dev/null
+++ b/app/javascript/mastodon/actions/push_notifications.js
@@ -0,0 +1,52 @@
+import axios from 'axios';
+
+export const SET_BROWSER_SUPPORT = 'PUSH_NOTIFICATIONS_SET_BROWSER_SUPPORT';
+export const SET_SUBSCRIPTION = 'PUSH_NOTIFICATIONS_SET_SUBSCRIPTION';
+export const CLEAR_SUBSCRIPTION = 'PUSH_NOTIFICATIONS_CLEAR_SUBSCRIPTION';
+export const ALERTS_CHANGE = 'PUSH_NOTIFICATIONS_ALERTS_CHANGE';
+
+export function setBrowserSupport (value) {
+  return {
+    type: SET_BROWSER_SUPPORT,
+    value,
+  };
+}
+
+export function setSubscription (subscription) {
+  return {
+    type: SET_SUBSCRIPTION,
+    subscription,
+  };
+}
+
+export function clearSubscription () {
+  return {
+    type: CLEAR_SUBSCRIPTION,
+  };
+}
+
+export function changeAlerts(key, value) {
+  return dispatch => {
+    dispatch({
+      type: ALERTS_CHANGE,
+      key,
+      value,
+    });
+
+    dispatch(saveSettings());
+  };
+}
+
+export function saveSettings() {
+  return (_, getState) => {
+    const state = getState().get('push_notifications');
+    const subscription = state.get('subscription');
+    const alerts = state.get('alerts');
+
+    axios.put(`/api/web/push_subscriptions/${subscription.get('id')}`, {
+      data: {
+        alerts,
+      },
+    });
+  };
+}
diff --git a/app/javascript/mastodon/actions/reports.js b/app/javascript/mastodon/actions/reports.js
new file mode 100644
index 00000000000..b19a07285bd
--- /dev/null
+++ b/app/javascript/mastodon/actions/reports.js
@@ -0,0 +1,80 @@
+import api from '../api';
+import { openModal, closeModal } from './modal';
+
+export const REPORT_INIT   = 'REPORT_INIT';
+export const REPORT_CANCEL = 'REPORT_CANCEL';
+
+export const REPORT_SUBMIT_REQUEST = 'REPORT_SUBMIT_REQUEST';
+export const REPORT_SUBMIT_SUCCESS = 'REPORT_SUBMIT_SUCCESS';
+export const REPORT_SUBMIT_FAIL    = 'REPORT_SUBMIT_FAIL';
+
+export const REPORT_STATUS_TOGGLE  = 'REPORT_STATUS_TOGGLE';
+export const REPORT_COMMENT_CHANGE = 'REPORT_COMMENT_CHANGE';
+
+export function initReport(account, status) {
+  return dispatch => {
+    dispatch({
+      type: REPORT_INIT,
+      account,
+      status,
+    });
+
+    dispatch(openModal('REPORT'));
+  };
+};
+
+export function cancelReport() {
+  return {
+    type: REPORT_CANCEL,
+  };
+};
+
+export function toggleStatusReport(statusId, checked) {
+  return {
+    type: REPORT_STATUS_TOGGLE,
+    statusId,
+    checked,
+  };
+};
+
+export function submitReport() {
+  return (dispatch, getState) => {
+    dispatch(submitReportRequest());
+
+    api(getState).post('/api/v1/reports', {
+      account_id: getState().getIn(['reports', 'new', 'account_id']),
+      status_ids: getState().getIn(['reports', 'new', 'status_ids']),
+      comment: getState().getIn(['reports', 'new', 'comment']),
+    }).then(response => {
+      dispatch(closeModal());
+      dispatch(submitReportSuccess(response.data));
+    }).catch(error => dispatch(submitReportFail(error)));
+  };
+};
+
+export function submitReportRequest() {
+  return {
+    type: REPORT_SUBMIT_REQUEST,
+  };
+};
+
+export function submitReportSuccess(report) {
+  return {
+    type: REPORT_SUBMIT_SUCCESS,
+    report,
+  };
+};
+
+export function submitReportFail(error) {
+  return {
+    type: REPORT_SUBMIT_FAIL,
+    error,
+  };
+};
+
+export function changeReportComment(comment) {
+  return {
+    type: REPORT_COMMENT_CHANGE,
+    comment,
+  };
+};
diff --git a/app/javascript/mastodon/actions/search.js b/app/javascript/mastodon/actions/search.js
new file mode 100644
index 00000000000..78c6109f729
--- /dev/null
+++ b/app/javascript/mastodon/actions/search.js
@@ -0,0 +1,73 @@
+import api from '../api';
+
+export const SEARCH_CHANGE = 'SEARCH_CHANGE';
+export const SEARCH_CLEAR  = 'SEARCH_CLEAR';
+export const SEARCH_SHOW   = 'SEARCH_SHOW';
+
+export const SEARCH_FETCH_REQUEST = 'SEARCH_FETCH_REQUEST';
+export const SEARCH_FETCH_SUCCESS = 'SEARCH_FETCH_SUCCESS';
+export const SEARCH_FETCH_FAIL    = 'SEARCH_FETCH_FAIL';
+
+export function changeSearch(value) {
+  return {
+    type: SEARCH_CHANGE,
+    value,
+  };
+};
+
+export function clearSearch() {
+  return {
+    type: SEARCH_CLEAR,
+  };
+};
+
+export function submitSearch() {
+  return (dispatch, getState) => {
+    const value = getState().getIn(['search', 'value']);
+
+    if (value.length === 0) {
+      return;
+    }
+
+    dispatch(fetchSearchRequest());
+
+    api(getState).get('/api/v1/search', {
+      params: {
+        q: value,
+        resolve: true,
+      },
+    }).then(response => {
+      dispatch(fetchSearchSuccess(response.data));
+    }).catch(error => {
+      dispatch(fetchSearchFail(error));
+    });
+  };
+};
+
+export function fetchSearchRequest() {
+  return {
+    type: SEARCH_FETCH_REQUEST,
+  };
+};
+
+export function fetchSearchSuccess(results) {
+  return {
+    type: SEARCH_FETCH_SUCCESS,
+    results,
+    accounts: results.accounts,
+    statuses: results.statuses,
+  };
+};
+
+export function fetchSearchFail(error) {
+  return {
+    type: SEARCH_FETCH_FAIL,
+    error,
+  };
+};
+
+export function showSearch() {
+  return {
+    type: SEARCH_SHOW,
+  };
+};
diff --git a/app/javascript/mastodon/actions/settings.js b/app/javascript/mastodon/actions/settings.js
new file mode 100644
index 00000000000..79adca18c6e
--- /dev/null
+++ b/app/javascript/mastodon/actions/settings.js
@@ -0,0 +1,31 @@
+import axios from 'axios';
+import { debounce } from 'lodash';
+
+export const SETTING_CHANGE = 'SETTING_CHANGE';
+export const SETTING_SAVE   = 'SETTING_SAVE';
+
+export function changeSetting(key, value) {
+  return dispatch => {
+    dispatch({
+      type: SETTING_CHANGE,
+      key,
+      value,
+    });
+
+    dispatch(saveSettings());
+  };
+};
+
+const debouncedSave = debounce((dispatch, getState) => {
+  if (getState().getIn(['settings', 'saved'])) {
+    return;
+  }
+
+  const data = getState().get('settings').filter((_, key) => key !== 'saved').toJS();
+
+  axios.put('/api/web/settings', { data }).then(() => dispatch({ type: SETTING_SAVE }));
+}, 5000, { trailing: true });
+
+export function saveSettings() {
+  return (dispatch, getState) => debouncedSave(dispatch, getState);
+};
diff --git a/app/javascript/mastodon/actions/statuses.js b/app/javascript/mastodon/actions/statuses.js
new file mode 100644
index 00000000000..2204e0b14a6
--- /dev/null
+++ b/app/javascript/mastodon/actions/statuses.js
@@ -0,0 +1,217 @@
+import api from '../api';
+
+import { deleteFromTimelines } from './timelines';
+import { fetchStatusCard } from './cards';
+
+export const STATUS_FETCH_REQUEST = 'STATUS_FETCH_REQUEST';
+export const STATUS_FETCH_SUCCESS = 'STATUS_FETCH_SUCCESS';
+export const STATUS_FETCH_FAIL    = 'STATUS_FETCH_FAIL';
+
+export const STATUS_DELETE_REQUEST = 'STATUS_DELETE_REQUEST';
+export const STATUS_DELETE_SUCCESS = 'STATUS_DELETE_SUCCESS';
+export const STATUS_DELETE_FAIL    = 'STATUS_DELETE_FAIL';
+
+export const CONTEXT_FETCH_REQUEST = 'CONTEXT_FETCH_REQUEST';
+export const CONTEXT_FETCH_SUCCESS = 'CONTEXT_FETCH_SUCCESS';
+export const CONTEXT_FETCH_FAIL    = 'CONTEXT_FETCH_FAIL';
+
+export const STATUS_MUTE_REQUEST = 'STATUS_MUTE_REQUEST';
+export const STATUS_MUTE_SUCCESS = 'STATUS_MUTE_SUCCESS';
+export const STATUS_MUTE_FAIL    = 'STATUS_MUTE_FAIL';
+
+export const STATUS_UNMUTE_REQUEST = 'STATUS_UNMUTE_REQUEST';
+export const STATUS_UNMUTE_SUCCESS = 'STATUS_UNMUTE_SUCCESS';
+export const STATUS_UNMUTE_FAIL    = 'STATUS_UNMUTE_FAIL';
+
+export function fetchStatusRequest(id, skipLoading) {
+  return {
+    type: STATUS_FETCH_REQUEST,
+    id,
+    skipLoading,
+  };
+};
+
+export function fetchStatus(id) {
+  return (dispatch, getState) => {
+    const skipLoading = getState().getIn(['statuses', id], null) !== null;
+
+    dispatch(fetchContext(id));
+    dispatch(fetchStatusCard(id));
+
+    if (skipLoading) {
+      return;
+    }
+
+    dispatch(fetchStatusRequest(id, skipLoading));
+
+    api(getState).get(`/api/v1/statuses/${id}`).then(response => {
+      dispatch(fetchStatusSuccess(response.data, skipLoading));
+    }).catch(error => {
+      dispatch(fetchStatusFail(id, error, skipLoading));
+    });
+  };
+};
+
+export function fetchStatusSuccess(status, skipLoading) {
+  return {
+    type: STATUS_FETCH_SUCCESS,
+    status,
+    skipLoading,
+  };
+};
+
+export function fetchStatusFail(id, error, skipLoading) {
+  return {
+    type: STATUS_FETCH_FAIL,
+    id,
+    error,
+    skipLoading,
+    skipAlert: true,
+  };
+};
+
+export function deleteStatus(id) {
+  return (dispatch, getState) => {
+    dispatch(deleteStatusRequest(id));
+
+    api(getState).delete(`/api/v1/statuses/${id}`).then(() => {
+      dispatch(deleteStatusSuccess(id));
+      dispatch(deleteFromTimelines(id));
+    }).catch(error => {
+      dispatch(deleteStatusFail(id, error));
+    });
+  };
+};
+
+export function deleteStatusRequest(id) {
+  return {
+    type: STATUS_DELETE_REQUEST,
+    id: id,
+  };
+};
+
+export function deleteStatusSuccess(id) {
+  return {
+    type: STATUS_DELETE_SUCCESS,
+    id: id,
+  };
+};
+
+export function deleteStatusFail(id, error) {
+  return {
+    type: STATUS_DELETE_FAIL,
+    id: id,
+    error: error,
+  };
+};
+
+export function fetchContext(id) {
+  return (dispatch, getState) => {
+    dispatch(fetchContextRequest(id));
+
+    api(getState).get(`/api/v1/statuses/${id}/context`).then(response => {
+      dispatch(fetchContextSuccess(id, response.data.ancestors, response.data.descendants));
+
+    }).catch(error => {
+      if (error.response && error.response.status === 404) {
+        dispatch(deleteFromTimelines(id));
+      }
+
+      dispatch(fetchContextFail(id, error));
+    });
+  };
+};
+
+export function fetchContextRequest(id) {
+  return {
+    type: CONTEXT_FETCH_REQUEST,
+    id,
+  };
+};
+
+export function fetchContextSuccess(id, ancestors, descendants) {
+  return {
+    type: CONTEXT_FETCH_SUCCESS,
+    id,
+    ancestors,
+    descendants,
+    statuses: ancestors.concat(descendants),
+  };
+};
+
+export function fetchContextFail(id, error) {
+  return {
+    type: CONTEXT_FETCH_FAIL,
+    id,
+    error,
+    skipAlert: true,
+  };
+};
+
+export function muteStatus(id) {
+  return (dispatch, getState) => {
+    dispatch(muteStatusRequest(id));
+
+    api(getState).post(`/api/v1/statuses/${id}/mute`).then(() => {
+      dispatch(muteStatusSuccess(id));
+    }).catch(error => {
+      dispatch(muteStatusFail(id, error));
+    });
+  };
+};
+
+export function muteStatusRequest(id) {
+  return {
+    type: STATUS_MUTE_REQUEST,
+    id,
+  };
+};
+
+export function muteStatusSuccess(id) {
+  return {
+    type: STATUS_MUTE_SUCCESS,
+    id,
+  };
+};
+
+export function muteStatusFail(id, error) {
+  return {
+    type: STATUS_MUTE_FAIL,
+    id,
+    error,
+  };
+};
+
+export function unmuteStatus(id) {
+  return (dispatch, getState) => {
+    dispatch(unmuteStatusRequest(id));
+
+    api(getState).post(`/api/v1/statuses/${id}/unmute`).then(() => {
+      dispatch(unmuteStatusSuccess(id));
+    }).catch(error => {
+      dispatch(unmuteStatusFail(id, error));
+    });
+  };
+};
+
+export function unmuteStatusRequest(id) {
+  return {
+    type: STATUS_UNMUTE_REQUEST,
+    id,
+  };
+};
+
+export function unmuteStatusSuccess(id) {
+  return {
+    type: STATUS_UNMUTE_SUCCESS,
+    id,
+  };
+};
+
+export function unmuteStatusFail(id, error) {
+  return {
+    type: STATUS_UNMUTE_FAIL,
+    id,
+    error,
+  };
+};
diff --git a/app/javascript/mastodon/actions/store.js b/app/javascript/mastodon/actions/store.js
new file mode 100644
index 00000000000..a1db0fdd51c
--- /dev/null
+++ b/app/javascript/mastodon/actions/store.js
@@ -0,0 +1,17 @@
+import { Iterable, fromJS } from 'immutable';
+
+export const STORE_HYDRATE = 'STORE_HYDRATE';
+export const STORE_HYDRATE_LAZY = 'STORE_HYDRATE_LAZY';
+
+const convertState = rawState =>
+  fromJS(rawState, (k, v) =>
+    Iterable.isIndexed(v) ? v.toList() : v.toMap());
+
+export function hydrateStore(rawState) {
+  const state = convertState(rawState);
+
+  return {
+    type: STORE_HYDRATE,
+    state,
+  };
+};
diff --git a/app/javascript/mastodon/actions/streaming.js b/app/javascript/mastodon/actions/streaming.js
new file mode 100644
index 00000000000..dcce048cab5
--- /dev/null
+++ b/app/javascript/mastodon/actions/streaming.js
@@ -0,0 +1,53 @@
+import { connectStream } from '../stream';
+import {
+  updateTimeline,
+  deleteFromTimelines,
+  refreshHomeTimeline,
+  connectTimeline,
+  disconnectTimeline,
+} from './timelines';
+import { updateNotifications, refreshNotifications } from './notifications';
+import { getLocale } from '../locales';
+
+const { messages } = getLocale();
+
+export function connectTimelineStream (timelineId, path, pollingRefresh = null) {
+
+  return connectStream (path, pollingRefresh, (dispatch, getState) => {
+    const locale = getState().getIn(['meta', 'locale']);
+    return {
+      onConnect() {
+        dispatch(connectTimeline(timelineId));
+      },
+
+      onDisconnect() {
+        dispatch(disconnectTimeline(timelineId));
+      },
+
+      onReceive (data) {
+        switch(data.event) {
+        case 'update':
+          dispatch(updateTimeline(timelineId, JSON.parse(data.payload)));
+          break;
+        case 'delete':
+          dispatch(deleteFromTimelines(data.payload));
+          break;
+        case 'notification':
+          dispatch(updateNotifications(JSON.parse(data.payload), messages, locale));
+          break;
+        }
+      },
+    };
+  });
+}
+
+function refreshHomeTimelineAndNotification (dispatch) {
+  dispatch(refreshHomeTimeline());
+  dispatch(refreshNotifications());
+}
+
+export const connectUserStream = () => connectTimelineStream('home', 'user', refreshHomeTimelineAndNotification);
+export const connectCommunityStream = () => connectTimelineStream('community', 'public:local');
+export const connectMediaStream = () => connectTimelineStream('community', 'public:local');
+export const connectPublicStream = () => connectTimelineStream('public', 'public');
+export const connectHashtagStream = (tag) => connectTimelineStream(`hashtag:${tag}`, `hashtag&tag=${tag}`);
diff --git a/app/javascript/mastodon/actions/timelines.js b/app/javascript/mastodon/actions/timelines.js
new file mode 100644
index 00000000000..09abe2702a5
--- /dev/null
+++ b/app/javascript/mastodon/actions/timelines.js
@@ -0,0 +1,206 @@
+import api, { getLinks } from '../api';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
+
+export const TIMELINE_UPDATE  = 'TIMELINE_UPDATE';
+export const TIMELINE_DELETE  = 'TIMELINE_DELETE';
+
+export const TIMELINE_REFRESH_REQUEST = 'TIMELINE_REFRESH_REQUEST';
+export const TIMELINE_REFRESH_SUCCESS = 'TIMELINE_REFRESH_SUCCESS';
+export const TIMELINE_REFRESH_FAIL    = 'TIMELINE_REFRESH_FAIL';
+
+export const TIMELINE_EXPAND_REQUEST = 'TIMELINE_EXPAND_REQUEST';
+export const TIMELINE_EXPAND_SUCCESS = 'TIMELINE_EXPAND_SUCCESS';
+export const TIMELINE_EXPAND_FAIL    = 'TIMELINE_EXPAND_FAIL';
+
+export const TIMELINE_SCROLL_TOP = 'TIMELINE_SCROLL_TOP';
+
+export const TIMELINE_CONNECT    = 'TIMELINE_CONNECT';
+export const TIMELINE_DISCONNECT = 'TIMELINE_DISCONNECT';
+
+export const TIMELINE_CONTEXT_UPDATE = 'CONTEXT_UPDATE';
+
+export function refreshTimelineSuccess(timeline, statuses, skipLoading, next) {
+  return {
+    type: TIMELINE_REFRESH_SUCCESS,
+    timeline,
+    statuses,
+    skipLoading,
+    next,
+  };
+};
+
+export function updateTimeline(timeline, status) {
+  return (dispatch, getState) => {
+    const references = status.reblog ? getState().get('statuses').filter((item, itemId) => (itemId === status.reblog.id || item.get('reblog') === status.reblog.id)).map((_, itemId) => itemId) : [];
+    const parents = [];
+
+    if (status.in_reply_to_id) {
+      let parent = getState().getIn(['statuses', status.in_reply_to_id]);
+
+      while (parent && parent.get('in_reply_to_id')) {
+        parents.push(parent.get('id'));
+        parent = getState().getIn(['statuses', parent.get('in_reply_to_id')]);
+      }
+    }
+
+    dispatch({
+      type: TIMELINE_UPDATE,
+      timeline,
+      status,
+      references,
+    });
+
+    if (parents.length > 0) {
+      dispatch({
+        type: TIMELINE_CONTEXT_UPDATE,
+        status,
+        references: parents,
+      });
+    }
+  };
+};
+
+export function deleteFromTimelines(id) {
+  return (dispatch, getState) => {
+    const accountId  = getState().getIn(['statuses', id, 'account']);
+    const references = getState().get('statuses').filter(status => status.get('reblog') === id).map(status => [status.get('id'), status.get('account')]);
+    const reblogOf   = getState().getIn(['statuses', id, 'reblog'], null);
+
+    dispatch({
+      type: TIMELINE_DELETE,
+      id,
+      accountId,
+      references,
+      reblogOf,
+    });
+  };
+};
+
+export function refreshTimelineRequest(timeline, skipLoading) {
+  return {
+    type: TIMELINE_REFRESH_REQUEST,
+    timeline,
+    skipLoading,
+  };
+};
+
+export function refreshTimeline(timelineId, path, params = {}) {
+  return function (dispatch, getState) {
+    const timeline = getState().getIn(['timelines', timelineId], ImmutableMap());
+
+    if (timeline.get('isLoading') || timeline.get('online')) {
+      return;
+    }
+
+    const ids      = timeline.get('items', ImmutableList());
+    const newestId = ids.size > 0 ? ids.first() : null;
+
+    let skipLoading = timeline.get('loaded');
+
+    if (newestId !== null) {
+      params.since_id = newestId;
+    }
+
+    dispatch(refreshTimelineRequest(timelineId, skipLoading));
+
+    api(getState).get(path, { params }).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(refreshTimelineSuccess(timelineId, response.data, skipLoading, next ? next.uri : null));
+    }).catch(error => {
+      dispatch(refreshTimelineFail(timelineId, error, skipLoading));
+    });
+  };
+};
+
+export const refreshHomeTimeline         = () => refreshTimeline('home', '/api/v1/timelines/home');
+export const refreshPublicTimeline       = () => refreshTimeline('public', '/api/v1/timelines/public');
+export const refreshCommunityTimeline    = () => refreshTimeline('community', '/api/v1/timelines/public', { local: true });
+export const refreshAccountTimeline      = accountId => refreshTimeline(`account:${accountId}`, `/api/v1/accounts/${accountId}/statuses`);
+export const refreshAccountMediaTimeline = accountId => refreshTimeline(`account:${accountId}:media`, `/api/v1/accounts/${accountId}/statuses`, { only_media: true });
+export const refreshHashtagTimeline      = hashtag => refreshTimeline(`hashtag:${hashtag}`, `/api/v1/timelines/tag/${hashtag}`);
+
+export function refreshTimelineFail(timeline, error, skipLoading) {
+  return {
+    type: TIMELINE_REFRESH_FAIL,
+    timeline,
+    error,
+    skipLoading,
+    skipAlert: error.response && error.response.status === 404,
+  };
+};
+
+export function expandTimeline(timelineId, path, params = {}) {
+  return (dispatch, getState) => {
+    const timeline = getState().getIn(['timelines', timelineId], ImmutableMap());
+    const ids      = timeline.get('items', ImmutableList());
+
+    if (timeline.get('isLoading') || ids.size === 0) {
+      return;
+    }
+
+    params.max_id = ids.last();
+    params.limit  = 10;
+
+    dispatch(expandTimelineRequest(timelineId));
+
+    api(getState).get(path, { params }).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(expandTimelineSuccess(timelineId, response.data, next ? next.uri : null));
+    }).catch(error => {
+      dispatch(expandTimelineFail(timelineId, error));
+    });
+  };
+};
+
+export const expandHomeTimeline         = () => expandTimeline('home', '/api/v1/timelines/home');
+export const expandPublicTimeline       = () => expandTimeline('public', '/api/v1/timelines/public');
+export const expandCommunityTimeline    = () => expandTimeline('community', '/api/v1/timelines/public', { local: true });
+export const expandAccountTimeline      = accountId => expandTimeline(`account:${accountId}`, `/api/v1/accounts/${accountId}/statuses`);
+export const expandAccountMediaTimeline = accountId => expandTimeline(`account:${accountId}:media`, `/api/v1/accounts/${accountId}/statuses`, { only_media: true });
+export const expandHashtagTimeline      = hashtag => expandTimeline(`hashtag:${hashtag}`, `/api/v1/timelines/tag/${hashtag}`);
+
+export function expandTimelineRequest(timeline) {
+  return {
+    type: TIMELINE_EXPAND_REQUEST,
+    timeline,
+  };
+};
+
+export function expandTimelineSuccess(timeline, statuses, next) {
+  return {
+    type: TIMELINE_EXPAND_SUCCESS,
+    timeline,
+    statuses,
+    next,
+  };
+};
+
+export function expandTimelineFail(timeline, error) {
+  return {
+    type: TIMELINE_EXPAND_FAIL,
+    timeline,
+    error,
+  };
+};
+
+export function scrollTopTimeline(timeline, top) {
+  return {
+    type: TIMELINE_SCROLL_TOP,
+    timeline,
+    top,
+  };
+};
+
+export function connectTimeline(timeline) {
+  return {
+    type: TIMELINE_CONNECT,
+    timeline,
+  };
+};
+
+export function disconnectTimeline(timeline) {
+  return {
+    type: TIMELINE_DISCONNECT,
+    timeline,
+  };
+};
diff --git a/app/javascript/mastodon/api.js b/app/javascript/mastodon/api.js
new file mode 100644
index 00000000000..ecc703c0aa3
--- /dev/null
+++ b/app/javascript/mastodon/api.js
@@ -0,0 +1,26 @@
+import axios from 'axios';
+import LinkHeader from './link_header';
+
+export const getLinks = response => {
+  const value = response.headers.link;
+
+  if (!value) {
+    return { refs: [] };
+  }
+
+  return LinkHeader.parse(value);
+};
+
+export default getState => axios.create({
+  headers: {
+    'Authorization': `Bearer ${getState().getIn(['meta', 'access_token'], '')}`,
+  },
+
+  transformResponse: [function (data) {
+    try {
+      return JSON.parse(data);
+    } catch(Exception) {
+      return data;
+    }
+  }],
+});
diff --git a/app/javascript/mastodon/base_polyfills.js b/app/javascript/mastodon/base_polyfills.js
new file mode 100644
index 00000000000..7856b26f9d8
--- /dev/null
+++ b/app/javascript/mastodon/base_polyfills.js
@@ -0,0 +1,18 @@
+import 'intl';
+import 'intl/locale-data/jsonp/en';
+import 'es6-symbol/implement';
+import includes from 'array-includes';
+import assign from 'object-assign';
+import isNaN from 'is-nan';
+
+if (!Array.prototype.includes) {
+  includes.shim();
+}
+
+if (!Object.assign) {
+  Object.assign = assign;
+}
+
+if (!Number.isNaN) {
+  Number.isNaN = isNaN;
+}
diff --git a/app/javascript/mastodon/components/__tests__/__snapshots__/avatar-test.js.snap b/app/javascript/mastodon/components/__tests__/__snapshots__/avatar-test.js.snap
new file mode 100644
index 00000000000..76ab3374ae8
--- /dev/null
+++ b/app/javascript/mastodon/components/__tests__/__snapshots__/avatar-test.js.snap
@@ -0,0 +1,33 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`<Avatar /> Autoplay renders a animated avatar 1`] = `
+<div
+  className="account__avatar"
+  onMouseEnter={[Function]}
+  onMouseLeave={[Function]}
+  style={
+    Object {
+      "backgroundImage": "url(/animated/alice.gif)",
+      "backgroundSize": "100px 100px",
+      "height": "100px",
+      "width": "100px",
+    }
+  }
+/>
+`;
+
+exports[`<Avatar /> Still renders a still avatar 1`] = `
+<div
+  className="account__avatar"
+  onMouseEnter={[Function]}
+  onMouseLeave={[Function]}
+  style={
+    Object {
+      "backgroundImage": "url(/static/alice.jpg)",
+      "backgroundSize": "100px 100px",
+      "height": "100px",
+      "width": "100px",
+    }
+  }
+/>
+`;
diff --git a/app/javascript/mastodon/components/__tests__/__snapshots__/avatar_overlay-test.js.snap b/app/javascript/mastodon/components/__tests__/__snapshots__/avatar_overlay-test.js.snap
new file mode 100644
index 00000000000..d59fee42f66
--- /dev/null
+++ b/app/javascript/mastodon/components/__tests__/__snapshots__/avatar_overlay-test.js.snap
@@ -0,0 +1,24 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`<AvatarOverlay renders a overlay avatar 1`] = `
+<div
+  className="account__avatar-overlay"
+>
+  <div
+    className="account__avatar-overlay-base"
+    style={
+      Object {
+        "backgroundImage": "url(/static/alice.jpg)",
+      }
+    }
+  />
+  <div
+    className="account__avatar-overlay-overlay"
+    style={
+      Object {
+        "backgroundImage": "url(/static/eve.jpg)",
+      }
+    }
+  />
+</div>
+`;
diff --git a/app/javascript/mastodon/components/__tests__/__snapshots__/button-test.js.snap b/app/javascript/mastodon/components/__tests__/__snapshots__/button-test.js.snap
new file mode 100644
index 00000000000..c3f018d90e5
--- /dev/null
+++ b/app/javascript/mastodon/components/__tests__/__snapshots__/button-test.js.snap
@@ -0,0 +1,114 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`<Button /> adds class "button-secondary" if props.secondary given 1`] = `
+<button
+  className="button button-secondary"
+  disabled={undefined}
+  onClick={[Function]}
+  style={
+    Object {
+      "height": "36px",
+      "lineHeight": "36px",
+      "padding": "0 16px",
+    }
+  }
+/>
+`;
+
+exports[`<Button /> renders a button element 1`] = `
+<button
+  className="button"
+  disabled={undefined}
+  onClick={[Function]}
+  style={
+    Object {
+      "height": "36px",
+      "lineHeight": "36px",
+      "padding": "0 16px",
+    }
+  }
+/>
+`;
+
+exports[`<Button /> renders a disabled attribute if props.disabled given 1`] = `
+<button
+  className="button"
+  disabled={true}
+  onClick={[Function]}
+  style={
+    Object {
+      "height": "36px",
+      "lineHeight": "36px",
+      "padding": "0 16px",
+    }
+  }
+/>
+`;
+
+exports[`<Button /> renders class="button--block" if props.block given 1`] = `
+<button
+  className="button button--block"
+  disabled={undefined}
+  onClick={[Function]}
+  style={
+    Object {
+      "height": "36px",
+      "lineHeight": "36px",
+      "padding": "0 16px",
+    }
+  }
+/>
+`;
+
+exports[`<Button /> renders the children 1`] = `
+<button
+  className="button"
+  disabled={undefined}
+  onClick={[Function]}
+  style={
+    Object {
+      "height": "36px",
+      "lineHeight": "36px",
+      "padding": "0 16px",
+    }
+  }
+>
+  <p>
+    children
+  </p>
+</button>
+`;
+
+exports[`<Button /> renders the given text 1`] = `
+<button
+  className="button"
+  disabled={undefined}
+  onClick={[Function]}
+  style={
+    Object {
+      "height": "36px",
+      "lineHeight": "36px",
+      "padding": "0 16px",
+    }
+  }
+>
+  foo
+</button>
+`;
+
+exports[`<Button /> renders the props.text instead of children 1`] = `
+<button
+  className="button"
+  disabled={undefined}
+  onClick={[Function]}
+  style={
+    Object {
+      "height": "36px",
+      "lineHeight": "36px",
+      "padding": "0 16px",
+    }
+  }
+>
+  foo
+</button>
+`;
diff --git a/app/javascript/mastodon/components/__tests__/__snapshots__/display_name-test.js.snap b/app/javascript/mastodon/components/__tests__/__snapshots__/display_name-test.js.snap
new file mode 100644
index 00000000000..533359ffea0
--- /dev/null
+++ b/app/javascript/mastodon/components/__tests__/__snapshots__/display_name-test.js.snap
@@ -0,0 +1,23 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`<DisplayName /> renders display name + account name 1`] = `
+<span
+  className="display-name"
+>
+  <strong
+    className="display-name__html"
+    dangerouslySetInnerHTML={
+      Object {
+        "__html": "<p>Foo</p>",
+      }
+    }
+  />
+   
+  <span
+    className="display-name__account"
+  >
+    @
+    bar@baz
+  </span>
+</span>
+`;
diff --git a/app/javascript/mastodon/components/__tests__/avatar-test.js b/app/javascript/mastodon/components/__tests__/avatar-test.js
new file mode 100644
index 00000000000..dd3f7b7d210
--- /dev/null
+++ b/app/javascript/mastodon/components/__tests__/avatar-test.js
@@ -0,0 +1,36 @@
+import React from 'react';
+import renderer from 'react-test-renderer';
+import { fromJS } from 'immutable';
+import Avatar from '../avatar';
+
+describe('<Avatar />', () => {
+  const account = fromJS({
+    username: 'alice',
+    acct: 'alice',
+    display_name: 'Alice',
+    avatar: '/animated/alice.gif',
+    avatar_static: '/static/alice.jpg',
+  });
+
+  const size     = 100;
+
+  describe('Autoplay', () => {
+    it('renders a animated avatar', () => {
+      const component = renderer.create(<Avatar account={account} animate size={size} />);
+      const tree      = component.toJSON();
+
+      expect(tree).toMatchSnapshot();
+    });
+  });
+
+  describe('Still', () => {
+    it('renders a still avatar', () => {
+      const component = renderer.create(<Avatar account={account} size={size} />);
+      const tree      = component.toJSON();
+
+      expect(tree).toMatchSnapshot();
+    });
+  });
+
+  // TODO add autoplay test if possible
+});
diff --git a/app/javascript/mastodon/components/__tests__/avatar_overlay-test.js b/app/javascript/mastodon/components/__tests__/avatar_overlay-test.js
new file mode 100644
index 00000000000..44addea832f
--- /dev/null
+++ b/app/javascript/mastodon/components/__tests__/avatar_overlay-test.js
@@ -0,0 +1,29 @@
+import React from 'react';
+import renderer from 'react-test-renderer';
+import { fromJS } from 'immutable';
+import AvatarOverlay from '../avatar_overlay';
+
+describe('<AvatarOverlay', () => {
+  const account = fromJS({
+    username: 'alice',
+    acct: 'alice',
+    display_name: 'Alice',
+    avatar: '/animated/alice.gif',
+    avatar_static: '/static/alice.jpg',
+  });
+
+  const friend = fromJS({
+    username: 'eve',
+    acct: 'eve@blackhat.lair',
+    display_name: 'Evelyn',
+    avatar: '/animated/eve.gif',
+    avatar_static: '/static/eve.jpg',
+  });
+
+  it('renders a overlay avatar', () => {
+    const component = renderer.create(<AvatarOverlay account={account} friend={friend} />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+});
diff --git a/app/javascript/mastodon/components/__tests__/button-test.js b/app/javascript/mastodon/components/__tests__/button-test.js
new file mode 100644
index 00000000000..160cd3cbc75
--- /dev/null
+++ b/app/javascript/mastodon/components/__tests__/button-test.js
@@ -0,0 +1,75 @@
+import { shallow } from 'enzyme';
+import React from 'react';
+import renderer from 'react-test-renderer';
+import Button from '../button';
+
+describe('<Button />', () => {
+  it('renders a button element', () => {
+    const component = renderer.create(<Button />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('renders the given text', () => {
+    const text      = 'foo';
+    const component = renderer.create(<Button text={text} />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('handles click events using the given handler', () => {
+    const handler = jest.fn();
+    const button  = shallow(<Button onClick={handler} />);
+    button.find('button').simulate('click');
+
+    expect(handler.mock.calls.length).toEqual(1);
+  });
+
+  it('does not handle click events if props.disabled given', () => {
+    const handler = jest.fn();
+    const button  = shallow(<Button onClick={handler} disabled />);
+    button.find('button').simulate('click');
+
+    expect(handler.mock.calls.length).toEqual(0);
+  });
+
+  it('renders a disabled attribute if props.disabled given', () => {
+    const component = renderer.create(<Button disabled />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('renders the children', () => {
+    const children  = <p>children</p>;
+    const component = renderer.create(<Button>{children}</Button>);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('renders the props.text instead of children', () => {
+    const text      = 'foo';
+    const children  = <p>children</p>;
+    const component = renderer.create(<Button text={text}>{children}</Button>);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('renders class="button--block" if props.block given', () => {
+    const component = renderer.create(<Button block />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+
+  it('adds class "button-secondary" if props.secondary given', () => {
+    const component = renderer.create(<Button secondary />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+});
diff --git a/app/javascript/mastodon/components/__tests__/display_name-test.js b/app/javascript/mastodon/components/__tests__/display_name-test.js
new file mode 100644
index 00000000000..0d040c4cd8c
--- /dev/null
+++ b/app/javascript/mastodon/components/__tests__/display_name-test.js
@@ -0,0 +1,18 @@
+import React from 'react';
+import renderer from 'react-test-renderer';
+import { fromJS }  from 'immutable';
+import DisplayName from '../display_name';
+
+describe('<DisplayName />', () => {
+  it('renders display name + account name', () => {
+    const account = fromJS({
+      username: 'bar',
+      acct: 'bar@baz',
+      display_name_html: '<p>Foo</p>',
+    });
+    const component = renderer.create(<DisplayName account={account} />);
+    const tree      = component.toJSON();
+
+    expect(tree).toMatchSnapshot();
+  });
+});
diff --git a/app/javascript/mastodon/components/account.js b/app/javascript/mastodon/components/account.js
new file mode 100644
index 00000000000..724b10980aa
--- /dev/null
+++ b/app/javascript/mastodon/components/account.js
@@ -0,0 +1,116 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import Avatar from './avatar';
+import DisplayName from './display_name';
+import Permalink from './permalink';
+import IconButton from './icon_button';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { me } from '../initial_state';
+
+const messages = defineMessages({
+  follow: { id: 'account.follow', defaultMessage: 'Follow' },
+  unfollow: { id: 'account.unfollow', defaultMessage: 'Unfollow' },
+  requested: { id: 'account.requested', defaultMessage: 'Awaiting approval' },
+  unblock: { id: 'account.unblock', defaultMessage: 'Unblock @{name}' },
+  unmute: { id: 'account.unmute', defaultMessage: 'Unmute @{name}' },
+  mute_notifications: { id: 'account.mute_notifications', defaultMessage: 'Mute notifications from @{name}' },
+  unmute_notifications: { id: 'account.unmute_notifications', defaultMessage: 'Unmute notifications from @{name}' },
+});
+
+@injectIntl
+export default class Account extends ImmutablePureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map.isRequired,
+    onFollow: PropTypes.func.isRequired,
+    onBlock: PropTypes.func.isRequired,
+    onMute: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+    hidden: PropTypes.bool,
+  };
+
+  handleFollow = () => {
+    this.props.onFollow(this.props.account);
+  }
+
+  handleBlock = () => {
+    this.props.onBlock(this.props.account);
+  }
+
+  handleMute = () => {
+    this.props.onMute(this.props.account);
+  }
+
+  handleMuteNotifications = () => {
+    this.props.onMuteNotifications(this.props.account, true);
+  }
+
+  handleUnmuteNotifications = () => {
+    this.props.onMuteNotifications(this.props.account, false);
+  }
+
+  render () {
+    const { account, intl, hidden } = this.props;
+
+    if (!account) {
+      return <div />;
+    }
+
+    if (hidden) {
+      return (
+        <div>
+          {account.get('display_name')}
+          {account.get('username')}
+        </div>
+      );
+    }
+
+    let buttons;
+
+    if (account.get('id') !== me && account.get('relationship', null) !== null) {
+      const following = account.getIn(['relationship', 'following']);
+      const requested = account.getIn(['relationship', 'requested']);
+      const blocking  = account.getIn(['relationship', 'blocking']);
+      const muting  = account.getIn(['relationship', 'muting']);
+
+      if (requested) {
+        buttons = <IconButton disabled icon='hourglass' title={intl.formatMessage(messages.requested)} />;
+      } else if (blocking) {
+        buttons = <IconButton active icon='unlock-alt' title={intl.formatMessage(messages.unblock, { name: account.get('username') })} onClick={this.handleBlock} />;
+      } else if (muting) {
+        let hidingNotificationsButton;
+        if (muting.get('notifications')) {
+          hidingNotificationsButton = <IconButton active icon='bell' title={intl.formatMessage(messages.unmute_notifications, { name: account.get('username') })} onClick={this.handleUnmuteNotifications} />;
+        } else {
+          hidingNotificationsButton = <IconButton active icon='bell-slash' title={intl.formatMessage(messages.mute_notifications, { name: account.get('username')  })} onClick={this.handleMuteNotifications} />;
+        }
+        buttons = (
+          <div>
+            <IconButton active icon='volume-up' title={intl.formatMessage(messages.unmute, { name: account.get('username') })} onClick={this.handleMute} />
+            {hidingNotificationsButton}
+          </div>
+        );
+      } else {
+        buttons = <IconButton icon={following ? 'user-times' : 'user-plus'} title={intl.formatMessage(following ? messages.unfollow : messages.follow)} onClick={this.handleFollow} active={following} />;
+      }
+    }
+
+    return (
+      <div className='account'>
+        <div className='account__wrapper'>
+          <Permalink key={account.get('id')} className='account__display-name' href={account.get('url')} to={`/accounts/${account.get('id')}`}>
+            <div className='account__avatar-wrapper'><Avatar account={account} size={36} /></div>
+            <DisplayName account={account} />
+          </Permalink>
+
+          <div className='account__relationship'>
+            {buttons}
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/attachment_list.js b/app/javascript/mastodon/components/attachment_list.js
new file mode 100644
index 00000000000..b3d00b33573
--- /dev/null
+++ b/app/javascript/mastodon/components/attachment_list.js
@@ -0,0 +1,33 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const filename = url => url.split('/').pop().split('#')[0].split('?')[0];
+
+export default class AttachmentList extends ImmutablePureComponent {
+
+  static propTypes = {
+    media: ImmutablePropTypes.list.isRequired,
+  };
+
+  render () {
+    const { media } = this.props;
+
+    return (
+      <div className='attachment-list'>
+        <div className='attachment-list__icon'>
+          <i className='fa fa-link' />
+        </div>
+
+        <ul className='attachment-list__list'>
+          {media.map(attachment =>
+            <li key={attachment.get('id')}>
+              <a href={attachment.get('remote_url')} target='_blank' rel='noopener'>{filename(attachment.get('remote_url'))}</a>
+            </li>
+          )}
+        </ul>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/autosuggest_emoji.js b/app/javascript/mastodon/components/autosuggest_emoji.js
new file mode 100644
index 00000000000..ce4383a607f
--- /dev/null
+++ b/app/javascript/mastodon/components/autosuggest_emoji.js
@@ -0,0 +1,42 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import unicodeMapping from '../features/emoji/emoji_unicode_mapping_light';
+
+const assetHost = process.env.CDN_HOST || '';
+
+export default class AutosuggestEmoji extends React.PureComponent {
+
+  static propTypes = {
+    emoji: PropTypes.object.isRequired,
+  };
+
+  render () {
+    const { emoji } = this.props;
+    let url;
+
+    if (emoji.custom) {
+      url = emoji.imageUrl;
+    } else {
+      const mapping = unicodeMapping[emoji.native] || unicodeMapping[emoji.native.replace(/\uFE0F$/, '')];
+
+      if (!mapping) {
+        return null;
+      }
+
+      url = `${assetHost}/emoji/${mapping.filename}.svg`;
+    }
+
+    return (
+      <div className='autosuggest-emoji'>
+        <img
+          className='emojione'
+          src={url}
+          alt={emoji.native || emoji.colons}
+        />
+
+        {emoji.colons}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/autosuggest_textarea.js b/app/javascript/mastodon/components/autosuggest_textarea.js
new file mode 100644
index 00000000000..14a8d4c381b
--- /dev/null
+++ b/app/javascript/mastodon/components/autosuggest_textarea.js
@@ -0,0 +1,222 @@
+import React from 'react';
+import AutosuggestAccountContainer from '../features/compose/containers/autosuggest_account_container';
+import AutosuggestEmoji from './autosuggest_emoji';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import { isRtl } from '../rtl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import Textarea from 'react-textarea-autosize';
+import classNames from 'classnames';
+
+const textAtCursorMatchesToken = (str, caretPosition) => {
+  let word;
+
+  let left  = str.slice(0, caretPosition).search(/\S+$/);
+  let right = str.slice(caretPosition).search(/\s/);
+
+  if (right < 0) {
+    word = str.slice(left);
+  } else {
+    word = str.slice(left, right + caretPosition);
+  }
+
+  if (!word || word.trim().length < 3 || ['@', ':'].indexOf(word[0]) === -1) {
+    return [null, null];
+  }
+
+  word = word.trim().toLowerCase();
+
+  if (word.length > 0) {
+    return [left + 1, word];
+  } else {
+    return [null, null];
+  }
+};
+
+export default class AutosuggestTextarea extends ImmutablePureComponent {
+
+  static propTypes = {
+    value: PropTypes.string,
+    suggestions: ImmutablePropTypes.list,
+    disabled: PropTypes.bool,
+    placeholder: PropTypes.string,
+    onSuggestionSelected: PropTypes.func.isRequired,
+    onSuggestionsClearRequested: PropTypes.func.isRequired,
+    onSuggestionsFetchRequested: PropTypes.func.isRequired,
+    onChange: PropTypes.func.isRequired,
+    onKeyUp: PropTypes.func,
+    onKeyDown: PropTypes.func,
+    onPaste: PropTypes.func.isRequired,
+    autoFocus: PropTypes.bool,
+  };
+
+  static defaultProps = {
+    autoFocus: true,
+  };
+
+  state = {
+    suggestionsHidden: false,
+    selectedSuggestion: 0,
+    lastToken: null,
+    tokenStart: 0,
+  };
+
+  onChange = (e) => {
+    const [ tokenStart, token ] = textAtCursorMatchesToken(e.target.value, e.target.selectionStart);
+
+    if (token !== null && this.state.lastToken !== token) {
+      this.setState({ lastToken: token, selectedSuggestion: 0, tokenStart });
+      this.props.onSuggestionsFetchRequested(token);
+    } else if (token === null) {
+      this.setState({ lastToken: null });
+      this.props.onSuggestionsClearRequested();
+    }
+
+    this.props.onChange(e);
+  }
+
+  onKeyDown = (e) => {
+    const { suggestions, disabled } = this.props;
+    const { selectedSuggestion, suggestionsHidden } = this.state;
+
+    if (disabled) {
+      e.preventDefault();
+      return;
+    }
+
+    switch(e.key) {
+    case 'Escape':
+      if (!suggestionsHidden) {
+        e.preventDefault();
+        this.setState({ suggestionsHidden: true });
+      }
+
+      break;
+    case 'ArrowDown':
+      if (suggestions.size > 0 && !suggestionsHidden) {
+        e.preventDefault();
+        this.setState({ selectedSuggestion: Math.min(selectedSuggestion + 1, suggestions.size - 1) });
+      }
+
+      break;
+    case 'ArrowUp':
+      if (suggestions.size > 0 && !suggestionsHidden) {
+        e.preventDefault();
+        this.setState({ selectedSuggestion: Math.max(selectedSuggestion - 1, 0) });
+      }
+
+      break;
+    case 'Enter':
+    case 'Tab':
+      // Select suggestion
+      if (this.state.lastToken !== null && suggestions.size > 0 && !suggestionsHidden) {
+        e.preventDefault();
+        e.stopPropagation();
+        this.props.onSuggestionSelected(this.state.tokenStart, this.state.lastToken, suggestions.get(selectedSuggestion));
+      }
+
+      break;
+    }
+
+    if (e.defaultPrevented || !this.props.onKeyDown) {
+      return;
+    }
+
+    this.props.onKeyDown(e);
+  }
+
+  onKeyUp = e => {
+    if (e.key === 'Escape' && this.state.suggestionsHidden) {
+      document.querySelector('.ui').parentElement.focus();
+    }
+
+    if (this.props.onKeyUp) {
+      this.props.onKeyUp(e);
+    }
+  }
+
+  onBlur = () => {
+    this.setState({ suggestionsHidden: true });
+  }
+
+  onSuggestionClick = (e) => {
+    const suggestion = this.props.suggestions.get(e.currentTarget.getAttribute('data-index'));
+    e.preventDefault();
+    this.props.onSuggestionSelected(this.state.tokenStart, this.state.lastToken, suggestion);
+    this.textarea.focus();
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (nextProps.suggestions !== this.props.suggestions && nextProps.suggestions.size > 0 && this.state.suggestionsHidden) {
+      this.setState({ suggestionsHidden: false });
+    }
+  }
+
+  setTextarea = (c) => {
+    this.textarea = c;
+  }
+
+  onPaste = (e) => {
+    if (e.clipboardData && e.clipboardData.files.length === 1) {
+      this.props.onPaste(e.clipboardData.files);
+      e.preventDefault();
+    }
+  }
+
+  renderSuggestion = (suggestion, i) => {
+    const { selectedSuggestion } = this.state;
+    let inner, key;
+
+    if (typeof suggestion === 'object') {
+      inner = <AutosuggestEmoji emoji={suggestion} />;
+      key   = suggestion.id;
+    } else {
+      inner = <AutosuggestAccountContainer id={suggestion} />;
+      key   = suggestion;
+    }
+
+    return (
+      <div role='button' tabIndex='0' key={key} data-index={i} className={classNames('autosuggest-textarea__suggestions__item', { selected: i === selectedSuggestion })} onMouseDown={this.onSuggestionClick}>
+        {inner}
+      </div>
+    );
+  }
+
+  render () {
+    const { value, suggestions, disabled, placeholder, autoFocus } = this.props;
+    const { suggestionsHidden } = this.state;
+    const style = { direction: 'ltr' };
+
+    if (isRtl(value)) {
+      style.direction = 'rtl';
+    }
+
+    return (
+      <div className='autosuggest-textarea'>
+        <label>
+          <span style={{ display: 'none' }}>{placeholder}</span>
+
+          <Textarea
+            inputRef={this.setTextarea}
+            className='autosuggest-textarea__textarea'
+            disabled={disabled}
+            placeholder={placeholder}
+            autoFocus={autoFocus}
+            value={value}
+            onChange={this.onChange}
+            onKeyDown={this.onKeyDown}
+            onKeyUp={this.onKeyUp}
+            onBlur={this.onBlur}
+            onPaste={this.onPaste}
+            style={style}
+          />
+        </label>
+
+        <div className={`autosuggest-textarea__suggestions ${suggestionsHidden || suggestions.isEmpty() ? '' : 'autosuggest-textarea__suggestions--visible'}`}>
+          {suggestions.map(this.renderSuggestion)}
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/avatar.js b/app/javascript/mastodon/components/avatar.js
new file mode 100644
index 00000000000..f7c484ee3a7
--- /dev/null
+++ b/app/javascript/mastodon/components/avatar.js
@@ -0,0 +1,71 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+
+export default class Avatar extends React.PureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map.isRequired,
+    size: PropTypes.number.isRequired,
+    style: PropTypes.object,
+    animate: PropTypes.bool,
+    inline: PropTypes.bool,
+  };
+
+  static defaultProps = {
+    animate: false,
+    size: 20,
+    inline: false,
+  };
+
+  state = {
+    hovering: false,
+  };
+
+  handleMouseEnter = () => {
+    if (this.props.animate) return;
+    this.setState({ hovering: true });
+  }
+
+  handleMouseLeave = () => {
+    if (this.props.animate) return;
+    this.setState({ hovering: false });
+  }
+
+  render () {
+    const { account, size, animate, inline } = this.props;
+    const { hovering } = this.state;
+
+    const src = account.get('avatar');
+    const staticSrc = account.get('avatar_static');
+
+    let className = 'account__avatar';
+
+    if (inline) {
+      className = className + ' account__avatar-inline';
+    }
+
+    const style = {
+      ...this.props.style,
+      width: `${size}px`,
+      height: `${size}px`,
+      backgroundSize: `${size}px ${size}px`,
+    };
+
+    if (hovering || animate) {
+      style.backgroundImage = `url(${src})`;
+    } else {
+      style.backgroundImage = `url(${staticSrc})`;
+    }
+
+    return (
+      <div
+        className={className}
+        onMouseEnter={this.handleMouseEnter}
+        onMouseLeave={this.handleMouseLeave}
+        style={style}
+      />
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/avatar_overlay.js b/app/javascript/mastodon/components/avatar_overlay.js
new file mode 100644
index 00000000000..f5d67b34e8b
--- /dev/null
+++ b/app/javascript/mastodon/components/avatar_overlay.js
@@ -0,0 +1,30 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+
+export default class AvatarOverlay extends React.PureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map.isRequired,
+    friend: ImmutablePropTypes.map.isRequired,
+  };
+
+  render() {
+    const { account, friend } = this.props;
+
+    const baseStyle = {
+      backgroundImage: `url(${account.get('avatar_static')})`,
+    };
+
+    const overlayStyle = {
+      backgroundImage: `url(${friend.get('avatar_static')})`,
+    };
+
+    return (
+      <div className='account__avatar-overlay'>
+        <div className='account__avatar-overlay-base' style={baseStyle} />
+        <div className='account__avatar-overlay-overlay' style={overlayStyle} />
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/button.js b/app/javascript/mastodon/components/button.js
new file mode 100644
index 00000000000..51e2e6a7a80
--- /dev/null
+++ b/app/javascript/mastodon/components/button.js
@@ -0,0 +1,63 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import classNames from 'classnames';
+
+export default class Button extends React.PureComponent {
+
+  static propTypes = {
+    text: PropTypes.node,
+    onClick: PropTypes.func,
+    disabled: PropTypes.bool,
+    block: PropTypes.bool,
+    secondary: PropTypes.bool,
+    size: PropTypes.number,
+    className: PropTypes.string,
+    style: PropTypes.object,
+    children: PropTypes.node,
+  };
+
+  static defaultProps = {
+    size: 36,
+  };
+
+  handleClick = (e) => {
+    if (!this.props.disabled) {
+      this.props.onClick(e);
+    }
+  }
+
+  setRef = (c) => {
+    this.node = c;
+  }
+
+  focus() {
+    this.node.focus();
+  }
+
+  render () {
+    const style = {
+      padding: `0 ${this.props.size / 2.25}px`,
+      height: `${this.props.size}px`,
+      lineHeight: `${this.props.size}px`,
+      ...this.props.style,
+    };
+
+    const className = classNames('button', this.props.className, {
+      'button-secondary': this.props.secondary,
+      'button--block': this.props.block,
+    });
+
+    return (
+      <button
+        className={className}
+        disabled={this.props.disabled}
+        onClick={this.handleClick}
+        ref={this.setRef}
+        style={style}
+      >
+        {this.props.text || this.props.children}
+      </button>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/collapsable.js b/app/javascript/mastodon/components/collapsable.js
new file mode 100644
index 00000000000..42ea37ec229
--- /dev/null
+++ b/app/javascript/mastodon/components/collapsable.js
@@ -0,0 +1,22 @@
+import React from 'react';
+import Motion from '../features/ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import PropTypes from 'prop-types';
+
+const Collapsable = ({ fullHeight, isVisible, children }) => (
+  <Motion defaultStyle={{ opacity: !isVisible ? 0 : 100, height: isVisible ? fullHeight : 0 }} style={{ opacity: spring(!isVisible ? 0 : 100), height: spring(!isVisible ? 0 : fullHeight) }}>
+    {({ opacity, height }) =>
+      <div style={{ height: `${height}px`, overflow: 'hidden', opacity: opacity / 100, display: Math.floor(opacity) === 0 ? 'none' : 'block' }}>
+        {children}
+      </div>
+    }
+  </Motion>
+);
+
+Collapsable.propTypes = {
+  fullHeight: PropTypes.number.isRequired,
+  isVisible: PropTypes.bool.isRequired,
+  children: PropTypes.node.isRequired,
+};
+
+export default Collapsable;
diff --git a/app/javascript/mastodon/components/column.js b/app/javascript/mastodon/components/column.js
new file mode 100644
index 00000000000..e81236d265f
--- /dev/null
+++ b/app/javascript/mastodon/components/column.js
@@ -0,0 +1,52 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import detectPassiveEvents from 'detect-passive-events';
+import { scrollTop } from '../scroll';
+
+export default class Column extends React.PureComponent {
+
+  static propTypes = {
+    children: PropTypes.node,
+  };
+
+  scrollTop () {
+    const scrollable = this.node.querySelector('.scrollable');
+
+    if (!scrollable) {
+      return;
+    }
+
+    this._interruptScrollAnimation = scrollTop(scrollable);
+  }
+
+  handleWheel = () => {
+    if (typeof this._interruptScrollAnimation !== 'function') {
+      return;
+    }
+
+    this._interruptScrollAnimation();
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  componentDidMount () {
+    this.node.addEventListener('wheel', this.handleWheel,  detectPassiveEvents.hasSupport ? { passive: true } : false);
+  }
+
+  componentWillUnmount () {
+    this.node.removeEventListener('wheel', this.handleWheel);
+  }
+
+  render () {
+    const { children } = this.props;
+
+    return (
+      <div role='region' className='column' ref={this.setRef}>
+        {children}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/column_back_button.js b/app/javascript/mastodon/components/column_back_button.js
new file mode 100644
index 00000000000..8a60c4192a9
--- /dev/null
+++ b/app/javascript/mastodon/components/column_back_button.js
@@ -0,0 +1,28 @@
+import React from 'react';
+import { FormattedMessage } from 'react-intl';
+import PropTypes from 'prop-types';
+
+export default class ColumnBackButton extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  handleClick = () => {
+    if (window.history && window.history.length === 1) {
+      this.context.router.history.push('/');
+    } else {
+      this.context.router.history.goBack();
+    }
+  }
+
+  render () {
+    return (
+      <button onClick={this.handleClick} className='column-back-button'>
+        <i className='fa fa-fw fa-chevron-left column-back-button__icon' />
+        <FormattedMessage id='column_back_button.label' defaultMessage='Back' />
+      </button>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/column_back_button_slim.js b/app/javascript/mastodon/components/column_back_button_slim.js
new file mode 100644
index 00000000000..3b4f46d99f4
--- /dev/null
+++ b/app/javascript/mastodon/components/column_back_button_slim.js
@@ -0,0 +1,27 @@
+import React from 'react';
+import { FormattedMessage } from 'react-intl';
+import PropTypes from 'prop-types';
+
+export default class ColumnBackButtonSlim extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  handleClick = () => {
+    if (window.history && window.history.length === 1) this.context.router.history.push('/');
+    else this.context.router.history.goBack();
+  }
+
+  render () {
+    return (
+      <div className='column-back-button--slim'>
+        <div role='button' tabIndex='0' onClick={this.handleClick} className='column-back-button column-back-button--slim-button'>
+          <i className='fa fa-fw fa-chevron-left column-back-button__icon' />
+          <FormattedMessage id='column_back_button.label' defaultMessage='Back' />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/column_header.js b/app/javascript/mastodon/components/column_header.js
new file mode 100644
index 00000000000..80a8fbdb3a6
--- /dev/null
+++ b/app/javascript/mastodon/components/column_header.js
@@ -0,0 +1,159 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import classNames from 'classnames';
+import { FormattedMessage, injectIntl, defineMessages } from 'react-intl';
+
+const messages = defineMessages({
+  show: { id: 'column_header.show_settings', defaultMessage: 'Show settings' },
+  hide: { id: 'column_header.hide_settings', defaultMessage: 'Hide settings' },
+  moveLeft: { id: 'column_header.moveLeft_settings', defaultMessage: 'Move column to the left' },
+  moveRight: { id: 'column_header.moveRight_settings', defaultMessage: 'Move column to the right' },
+});
+
+@injectIntl
+export default class ColumnHeader extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    intl: PropTypes.object.isRequired,
+    title: PropTypes.node.isRequired,
+    icon: PropTypes.string.isRequired,
+    active: PropTypes.bool,
+    multiColumn: PropTypes.bool,
+    focusable: PropTypes.bool,
+    showBackButton: PropTypes.bool,
+    children: PropTypes.node,
+    pinned: PropTypes.bool,
+    onPin: PropTypes.func,
+    onMove: PropTypes.func,
+    onClick: PropTypes.func,
+  };
+
+  static defaultProps = {
+    focusable: true,
+  }
+
+  state = {
+    collapsed: true,
+    animating: false,
+  };
+
+  handleToggleClick = (e) => {
+    e.stopPropagation();
+    this.setState({ collapsed: !this.state.collapsed, animating: true });
+  }
+
+  handleTitleClick = () => {
+    this.props.onClick();
+  }
+
+  handleMoveLeft = () => {
+    this.props.onMove(-1);
+  }
+
+  handleMoveRight = () => {
+    this.props.onMove(1);
+  }
+
+  handleBackClick = () => {
+    if (window.history && window.history.length === 1) this.context.router.history.push('/');
+    else this.context.router.history.goBack();
+  }
+
+  handleTransitionEnd = () => {
+    this.setState({ animating: false });
+  }
+
+  render () {
+    const { title, icon, active, children, pinned, onPin, multiColumn, focusable, showBackButton, intl: { formatMessage } } = this.props;
+    const { collapsed, animating } = this.state;
+
+    const wrapperClassName = classNames('column-header__wrapper', {
+      'active': active,
+    });
+
+    const buttonClassName = classNames('column-header', {
+      'active': active,
+    });
+
+    const collapsibleClassName = classNames('column-header__collapsible', {
+      'collapsed': collapsed,
+      'animating': animating,
+    });
+
+    const collapsibleButtonClassName = classNames('column-header__button', {
+      'active': !collapsed,
+    });
+
+    let extraContent, pinButton, moveButtons, backButton, collapseButton;
+
+    if (children) {
+      extraContent = (
+        <div key='extra-content' className='column-header__collapsible__extra'>
+          {children}
+        </div>
+      );
+    }
+
+    if (multiColumn && pinned) {
+      pinButton = <button key='pin-button' className='text-btn column-header__setting-btn' onClick={onPin}><i className='fa fa fa-times' /> <FormattedMessage id='column_header.unpin' defaultMessage='Unpin' /></button>;
+
+      moveButtons = (
+        <div key='move-buttons' className='column-header__setting-arrows'>
+          <button title={formatMessage(messages.moveLeft)} aria-label={formatMessage(messages.moveLeft)} className='text-btn column-header__setting-btn' onClick={this.handleMoveLeft}><i className='fa fa-chevron-left' /></button>
+          <button title={formatMessage(messages.moveRight)} aria-label={formatMessage(messages.moveRight)} className='text-btn column-header__setting-btn' onClick={this.handleMoveRight}><i className='fa fa-chevron-right' /></button>
+        </div>
+      );
+    } else if (multiColumn) {
+      pinButton = <button key='pin-button' className='text-btn column-header__setting-btn' onClick={onPin}><i className='fa fa fa-plus' /> <FormattedMessage id='column_header.pin' defaultMessage='Pin' /></button>;
+    }
+
+    if (!pinned && (multiColumn || showBackButton)) {
+      backButton = (
+        <button onClick={this.handleBackClick} className='column-header__back-button'>
+          <i className='fa fa-fw fa-chevron-left column-back-button__icon' />
+          <FormattedMessage id='column_back_button.label' defaultMessage='Back' />
+        </button>
+      );
+    }
+
+    const collapsedContent = [
+      extraContent,
+    ];
+
+    if (multiColumn) {
+      collapsedContent.push(moveButtons);
+      collapsedContent.push(pinButton);
+    }
+
+    if (children || multiColumn) {
+      collapseButton = <button className={collapsibleButtonClassName} aria-label={formatMessage(collapsed ? messages.show : messages.hide)} aria-pressed={collapsed ? 'false' : 'true'} onClick={this.handleToggleClick}><i className='fa fa-sliders' /></button>;
+    }
+
+    return (
+      <div className={wrapperClassName}>
+        <h1 tabIndex={focusable ? 0 : null} role='button' className={buttonClassName} aria-label={title} onClick={this.handleTitleClick}>
+          <i className={`fa fa-fw fa-${icon} column-header__icon`} />
+          <span className='column-header__title'>
+            {title}
+          </span>
+
+          <div className='column-header__buttons'>
+            {backButton}
+            {collapseButton}
+          </div>
+        </h1>
+
+        <div className={collapsibleClassName} tabIndex={collapsed ? -1 : null} onTransitionEnd={this.handleTransitionEnd}>
+          <div className='column-header__collapsible-inner'>
+            {(!collapsed || animating) && collapsedContent}
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/display_name.js b/app/javascript/mastodon/components/display_name.js
new file mode 100644
index 00000000000..2cf84f8f4a0
--- /dev/null
+++ b/app/javascript/mastodon/components/display_name.js
@@ -0,0 +1,20 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+
+export default class DisplayName extends React.PureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map.isRequired,
+  };
+
+  render () {
+    const displayNameHtml = { __html: this.props.account.get('display_name_html') };
+
+    return (
+      <span className='display-name'>
+        <strong className='display-name__html' dangerouslySetInnerHTML={displayNameHtml} /> <span className='display-name__account'>@{this.props.account.get('acct')}</span>
+      </span>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/dropdown_menu.js b/app/javascript/mastodon/components/dropdown_menu.js
new file mode 100644
index 00000000000..3a3ebf4873d
--- /dev/null
+++ b/app/javascript/mastodon/components/dropdown_menu.js
@@ -0,0 +1,211 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import IconButton from './icon_button';
+import Overlay from 'react-overlays/lib/Overlay';
+import Motion from '../features/ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import detectPassiveEvents from 'detect-passive-events';
+
+const listenerOptions = detectPassiveEvents.hasSupport ? { passive: true } : false;
+
+class DropdownMenu extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    items: PropTypes.array.isRequired,
+    onClose: PropTypes.func.isRequired,
+    style: PropTypes.object,
+    placement: PropTypes.string,
+    arrowOffsetLeft: PropTypes.string,
+    arrowOffsetTop: PropTypes.string,
+  };
+
+  static defaultProps = {
+    style: {},
+    placement: 'bottom',
+  };
+
+  handleDocumentClick = e => {
+    if (this.node && !this.node.contains(e.target)) {
+      this.props.onClose();
+    }
+  }
+
+  componentDidMount () {
+    document.addEventListener('click', this.handleDocumentClick, false);
+    document.addEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  componentWillUnmount () {
+    document.removeEventListener('click', this.handleDocumentClick, false);
+    document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  handleClick = e => {
+    const i = Number(e.currentTarget.getAttribute('data-index'));
+    const { action, to } = this.props.items[i];
+
+    this.props.onClose();
+
+    if (typeof action === 'function') {
+      e.preventDefault();
+      action();
+    } else if (to) {
+      e.preventDefault();
+      this.context.router.history.push(to);
+    }
+  }
+
+  renderItem (option, i) {
+    if (option === null) {
+      return <li key={`sep-${i}`} className='dropdown-menu__separator' />;
+    }
+
+    const { text, href = '#' } = option;
+
+    return (
+      <li className='dropdown-menu__item' key={`${text}-${i}`}>
+        <a href={href} target='_blank' rel='noopener' role='button' tabIndex='0' autoFocus={i === 0} onClick={this.handleClick} data-index={i}>
+          {text}
+        </a>
+      </li>
+    );
+  }
+
+  render () {
+    const { items, style, placement, arrowOffsetLeft, arrowOffsetTop } = this.props;
+
+    return (
+      <Motion defaultStyle={{ opacity: 0, scaleX: 0.85, scaleY: 0.75 }} style={{ opacity: spring(1, { damping: 35, stiffness: 400 }), scaleX: spring(1, { damping: 35, stiffness: 400 }), scaleY: spring(1, { damping: 35, stiffness: 400 }) }}>
+        {({ opacity, scaleX, scaleY }) => (
+          <div className='dropdown-menu' style={{ ...style, opacity: opacity, transform: `scale(${scaleX}, ${scaleY})` }} ref={this.setRef}>
+            <div className={`dropdown-menu__arrow ${placement}`} style={{ left: arrowOffsetLeft, top: arrowOffsetTop }} />
+
+            <ul>
+              {items.map((option, i) => this.renderItem(option, i))}
+            </ul>
+          </div>
+        )}
+      </Motion>
+    );
+  }
+
+}
+
+export default class Dropdown extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    icon: PropTypes.string.isRequired,
+    items: PropTypes.array.isRequired,
+    size: PropTypes.number.isRequired,
+    ariaLabel: PropTypes.string,
+    disabled: PropTypes.bool,
+    status: ImmutablePropTypes.map,
+    isUserTouching: PropTypes.func,
+    isModalOpen: PropTypes.bool.isRequired,
+    onModalOpen: PropTypes.func,
+    onModalClose: PropTypes.func,
+  };
+
+  static defaultProps = {
+    ariaLabel: 'Menu',
+  };
+
+  state = {
+    expanded: false,
+  };
+
+  handleClick = () => {
+    if (!this.state.expanded && this.props.isUserTouching() && this.props.onModalOpen) {
+      const { status, items } = this.props;
+
+      this.props.onModalOpen({
+        status,
+        actions: items,
+        onClick: this.handleItemClick,
+      });
+
+      return;
+    }
+
+    this.setState({ expanded: !this.state.expanded });
+  }
+
+  handleClose = () => {
+    if (this.props.onModalClose) {
+      this.props.onModalClose();
+    }
+
+    this.setState({ expanded: false });
+  }
+
+  handleKeyDown = e => {
+    switch(e.key) {
+    case 'Enter':
+      this.handleClick();
+      break;
+    case 'Escape':
+      this.handleClose();
+      break;
+    }
+  }
+
+  handleItemClick = e => {
+    const i = Number(e.currentTarget.getAttribute('data-index'));
+    const { action, to } = this.props.items[i];
+
+    this.handleClose();
+
+    if (typeof action === 'function') {
+      e.preventDefault();
+      action();
+    } else if (to) {
+      e.preventDefault();
+      this.context.router.history.push(to);
+    }
+  }
+
+  setTargetRef = c => {
+    this.target = c;
+  }
+
+  findTarget = () => {
+    return this.target;
+  }
+
+  render () {
+    const { icon, items, size, ariaLabel, disabled } = this.props;
+    const { expanded } = this.state;
+
+    return (
+      <div onKeyDown={this.handleKeyDown}>
+        <IconButton
+          icon={icon}
+          title={ariaLabel}
+          active={expanded}
+          disabled={disabled}
+          size={size}
+          ref={this.setTargetRef}
+          onClick={this.handleClick}
+        />
+
+        <Overlay show={expanded} placement='bottom' target={this.findTarget}>
+          <DropdownMenu items={items} onClose={this.handleClose} />
+        </Overlay>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/extended_video_player.js b/app/javascript/mastodon/components/extended_video_player.js
new file mode 100644
index 00000000000..f8bd067e8e5
--- /dev/null
+++ b/app/javascript/mastodon/components/extended_video_player.js
@@ -0,0 +1,54 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+export default class ExtendedVideoPlayer extends React.PureComponent {
+
+  static propTypes = {
+    src: PropTypes.string.isRequired,
+    alt: PropTypes.string,
+    width: PropTypes.number,
+    height: PropTypes.number,
+    time: PropTypes.number,
+    controls: PropTypes.bool.isRequired,
+    muted: PropTypes.bool.isRequired,
+  };
+
+  handleLoadedData = () => {
+    if (this.props.time) {
+      this.video.currentTime = this.props.time;
+    }
+  }
+
+  componentDidMount () {
+    this.video.addEventListener('loadeddata', this.handleLoadedData);
+  }
+
+  componentWillUnmount () {
+    this.video.removeEventListener('loadeddata', this.handleLoadedData);
+  }
+
+  setRef = (c) => {
+    this.video = c;
+  }
+
+  render () {
+    const { src, muted, controls, alt } = this.props;
+
+    return (
+      <div className='extended-video-player'>
+        <video
+          ref={this.setRef}
+          src={src}
+          autoPlay
+          role='button'
+          tabIndex='0'
+          aria-label={alt}
+          muted={muted}
+          controls={controls}
+          loop={!controls}
+        />
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/icon_button.js b/app/javascript/mastodon/components/icon_button.js
new file mode 100644
index 00000000000..06f53841d23
--- /dev/null
+++ b/app/javascript/mastodon/components/icon_button.js
@@ -0,0 +1,114 @@
+import React from 'react';
+import Motion from '../features/ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import PropTypes from 'prop-types';
+import classNames from 'classnames';
+
+export default class IconButton extends React.PureComponent {
+
+  static propTypes = {
+    className: PropTypes.string,
+    title: PropTypes.string.isRequired,
+    icon: PropTypes.string.isRequired,
+    onClick: PropTypes.func,
+    size: PropTypes.number,
+    active: PropTypes.bool,
+    pressed: PropTypes.bool,
+    expanded: PropTypes.bool,
+    style: PropTypes.object,
+    activeStyle: PropTypes.object,
+    disabled: PropTypes.bool,
+    inverted: PropTypes.bool,
+    animate: PropTypes.bool,
+    overlay: PropTypes.bool,
+    tabIndex: PropTypes.string,
+  };
+
+  static defaultProps = {
+    size: 18,
+    active: false,
+    disabled: false,
+    animate: false,
+    overlay: false,
+    tabIndex: '0',
+  };
+
+  handleClick = (e) =>  {
+    e.preventDefault();
+
+    if (!this.props.disabled) {
+      this.props.onClick(e);
+    }
+  }
+
+  render () {
+    const style = {
+      fontSize: `${this.props.size}px`,
+      width: `${this.props.size * 1.28571429}px`,
+      height: `${this.props.size * 1.28571429}px`,
+      lineHeight: `${this.props.size}px`,
+      ...this.props.style,
+      ...(this.props.active ? this.props.activeStyle : {}),
+    };
+
+    const {
+      active,
+      animate,
+      className,
+      disabled,
+      expanded,
+      icon,
+      inverted,
+      overlay,
+      pressed,
+      tabIndex,
+      title,
+    } = this.props;
+
+    const classes = classNames(className, 'icon-button', {
+      active,
+      disabled,
+      inverted,
+      overlayed: overlay,
+    });
+
+    if (!animate) {
+      // Perf optimization: avoid unnecessary <Motion> components unless
+      // we actually need to animate.
+      return (
+        <button
+          aria-label={title}
+          aria-pressed={pressed}
+          aria-expanded={expanded}
+          title={title}
+          className={classes}
+          onClick={this.handleClick}
+          style={style}
+          tabIndex={tabIndex}
+        >
+          <i className={`fa fa-fw fa-${icon}`} aria-hidden='true' />
+        </button>
+      );
+    }
+
+    return (
+      <Motion defaultStyle={{ rotate: active ? -360 : 0 }} style={{ rotate: animate ? spring(active ? -360 : 0, { stiffness: 120, damping: 7 }) : 0 }}>
+        {({ rotate }) =>
+          <button
+            aria-label={title}
+            aria-pressed={pressed}
+            aria-expanded={expanded}
+            title={title}
+            className={classes}
+            onClick={this.handleClick}
+            style={style}
+            tabIndex={tabIndex}
+          >
+            <i style={{ transform: `rotate(${rotate}deg)` }} className={`fa fa-fw fa-${icon}`} aria-hidden='true' />
+          </button>
+        }
+      </Motion>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/intersection_observer_article.js b/app/javascript/mastodon/components/intersection_observer_article.js
new file mode 100644
index 00000000000..e2ce9ec9651
--- /dev/null
+++ b/app/javascript/mastodon/components/intersection_observer_article.js
@@ -0,0 +1,130 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import scheduleIdleTask from '../features/ui/util/schedule_idle_task';
+import getRectFromEntry from '../features/ui/util/get_rect_from_entry';
+import { is } from 'immutable';
+
+// Diff these props in the "rendered" state
+const updateOnPropsForRendered = ['id', 'index', 'listLength'];
+// Diff these props in the "unrendered" state
+const updateOnPropsForUnrendered = ['id', 'index', 'listLength', 'cachedHeight'];
+
+export default class IntersectionObserverArticle extends React.Component {
+
+  static propTypes = {
+    intersectionObserverWrapper: PropTypes.object.isRequired,
+    id: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+    index: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+    listLength: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
+    saveHeightKey: PropTypes.string,
+    cachedHeight: PropTypes.number,
+    onHeightChange: PropTypes.func,
+    children: PropTypes.node,
+  };
+
+  state = {
+    isHidden: false, // set to true in requestIdleCallback to trigger un-render
+  }
+
+  shouldComponentUpdate (nextProps, nextState) {
+    const isUnrendered = !this.state.isIntersecting && (this.state.isHidden || this.props.cachedHeight);
+    const willBeUnrendered = !nextState.isIntersecting && (nextState.isHidden || nextProps.cachedHeight);
+    if (!!isUnrendered !== !!willBeUnrendered) {
+      // If we're going from rendered to unrendered (or vice versa) then update
+      return true;
+    }
+    // Otherwise, diff based on props
+    const propsToDiff = isUnrendered ? updateOnPropsForUnrendered : updateOnPropsForRendered;
+    return !propsToDiff.every(prop => is(nextProps[prop], this.props[prop]));
+  }
+
+  componentDidMount () {
+    const { intersectionObserverWrapper, id } = this.props;
+
+    intersectionObserverWrapper.observe(
+      id,
+      this.node,
+      this.handleIntersection
+    );
+
+    this.componentMounted = true;
+  }
+
+  componentWillUnmount () {
+    const { intersectionObserverWrapper, id } = this.props;
+    intersectionObserverWrapper.unobserve(id, this.node);
+
+    this.componentMounted = false;
+  }
+
+  handleIntersection = (entry) => {
+    this.entry = entry;
+
+    scheduleIdleTask(this.calculateHeight);
+    this.setState(this.updateStateAfterIntersection);
+  }
+
+  updateStateAfterIntersection = (prevState) => {
+    if (prevState.isIntersecting && !this.entry.isIntersecting) {
+      scheduleIdleTask(this.hideIfNotIntersecting);
+    }
+    return {
+      isIntersecting: this.entry.isIntersecting,
+      isHidden: false,
+    };
+  }
+
+  calculateHeight = () => {
+    const { onHeightChange, saveHeightKey, id } = this.props;
+    // save the height of the fully-rendered element (this is expensive
+    // on Chrome, where we need to fall back to getBoundingClientRect)
+    this.height = getRectFromEntry(this.entry).height;
+
+    if (onHeightChange && saveHeightKey) {
+      onHeightChange(saveHeightKey, id, this.height);
+    }
+  }
+
+  hideIfNotIntersecting = () => {
+    if (!this.componentMounted) {
+      return;
+    }
+
+    // When the browser gets a chance, test if we're still not intersecting,
+    // and if so, set our isHidden to true to trigger an unrender. The point of
+    // this is to save DOM nodes and avoid using up too much memory.
+    // See: https://github.com/tootsuite/mastodon/issues/2900
+    this.setState((prevState) => ({ isHidden: !prevState.isIntersecting }));
+  }
+
+  handleRef = (node) => {
+    this.node = node;
+  }
+
+  render () {
+    const { children, id, index, listLength, cachedHeight } = this.props;
+    const { isIntersecting, isHidden } = this.state;
+
+    if (!isIntersecting && (isHidden || cachedHeight)) {
+      return (
+        <article
+          ref={this.handleRef}
+          aria-posinset={index}
+          aria-setsize={listLength}
+          style={{ height: `${this.height || cachedHeight}px`, opacity: 0, overflow: 'hidden' }}
+          data-id={id}
+          tabIndex='0'
+        >
+          {children && React.cloneElement(children, { hidden: true })}
+        </article>
+      );
+    }
+
+    return (
+      <article ref={this.handleRef} aria-posinset={index} aria-setsize={listLength} data-id={id} tabIndex='0'>
+        {children && React.cloneElement(children, { hidden: false })}
+      </article>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/load_more.js b/app/javascript/mastodon/components/load_more.js
new file mode 100644
index 00000000000..c4c8c94a2a4
--- /dev/null
+++ b/app/javascript/mastodon/components/load_more.js
@@ -0,0 +1,26 @@
+import React from 'react';
+import { FormattedMessage } from 'react-intl';
+import PropTypes from 'prop-types';
+
+export default class LoadMore extends React.PureComponent {
+
+  static propTypes = {
+    onClick: PropTypes.func,
+    visible: PropTypes.bool,
+  }
+
+  static defaultProps = {
+    visible: true,
+  }
+
+  render() {
+    const { visible } = this.props;
+
+    return (
+      <button className='load-more' disabled={!visible} style={{ visibility: visible ? 'visible' : 'hidden' }} onClick={this.props.onClick}>
+        <FormattedMessage id='status.load_more' defaultMessage='Load more' />
+      </button>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/loading_indicator.js b/app/javascript/mastodon/components/loading_indicator.js
new file mode 100644
index 00000000000..d6a5adb6fe7
--- /dev/null
+++ b/app/javascript/mastodon/components/loading_indicator.js
@@ -0,0 +1,11 @@
+import React from 'react';
+import { FormattedMessage } from 'react-intl';
+
+const LoadingIndicator = () => (
+  <div className='loading-indicator'>
+    <div className='loading-indicator__figure' />
+    <FormattedMessage id='loading_indicator.label' defaultMessage='Loading...' />
+  </div>
+);
+
+export default LoadingIndicator;
diff --git a/app/javascript/mastodon/components/media_gallery.js b/app/javascript/mastodon/components/media_gallery.js
new file mode 100644
index 00000000000..20febdb1669
--- /dev/null
+++ b/app/javascript/mastodon/components/media_gallery.js
@@ -0,0 +1,278 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import { is } from 'immutable';
+import IconButton from './icon_button';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import { isIOS } from '../is_mobile';
+import classNames from 'classnames';
+import { autoPlayGif } from '../initial_state';
+
+const messages = defineMessages({
+  toggle_visible: { id: 'media_gallery.toggle_visible', defaultMessage: 'Toggle visibility' },
+});
+
+class Item extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    attachment: ImmutablePropTypes.map.isRequired,
+    standalone: PropTypes.bool,
+    index: PropTypes.number.isRequired,
+    size: PropTypes.number.isRequired,
+    onClick: PropTypes.func.isRequired,
+  };
+
+  static defaultProps = {
+    standalone: false,
+    index: 0,
+    size: 1,
+  };
+
+  handleMouseEnter = (e) => {
+    if (this.hoverToPlay()) {
+      e.target.play();
+    }
+  }
+
+  handleMouseLeave = (e) => {
+    if (this.hoverToPlay()) {
+      e.target.pause();
+      e.target.currentTime = 0;
+    }
+  }
+
+  hoverToPlay () {
+    const { attachment } = this.props;
+    return !autoPlayGif && attachment.get('type') === 'gifv';
+  }
+
+  handleClick = (e) => {
+    const { index, onClick } = this.props;
+
+    if (this.context.router && e.button === 0) {
+      e.preventDefault();
+      onClick(index);
+    }
+
+    e.stopPropagation();
+  }
+
+  render () {
+    const { attachment, index, size, standalone } = this.props;
+
+    let width  = 50;
+    let height = 100;
+    let top    = 'auto';
+    let left   = 'auto';
+    let bottom = 'auto';
+    let right  = 'auto';
+
+    if (size === 1) {
+      width = 100;
+    }
+
+    if (size === 4 || (size === 3 && index > 0)) {
+      height = 50;
+    }
+
+    if (size === 2) {
+      if (index === 0) {
+        right = '2px';
+      } else {
+        left = '2px';
+      }
+    } else if (size === 3) {
+      if (index === 0) {
+        right = '2px';
+      } else if (index > 0) {
+        left = '2px';
+      }
+
+      if (index === 1) {
+        bottom = '2px';
+      } else if (index > 1) {
+        top = '2px';
+      }
+    } else if (size === 4) {
+      if (index === 0 || index === 2) {
+        right = '2px';
+      }
+
+      if (index === 1 || index === 3) {
+        left = '2px';
+      }
+
+      if (index < 2) {
+        bottom = '2px';
+      } else {
+        top = '2px';
+      }
+    }
+
+    let thumbnail = '';
+
+    if (attachment.get('type') === 'image') {
+      const previewUrl = attachment.get('preview_url');
+      const previewWidth = attachment.getIn(['meta', 'small', 'width']);
+
+      const originalUrl = attachment.get('url');
+      const originalWidth = attachment.getIn(['meta', 'original', 'width']);
+
+      const hasSize = typeof originalWidth === 'number' && typeof previewWidth === 'number';
+
+      const srcSet = hasSize ? `${originalUrl} ${originalWidth}w, ${previewUrl} ${previewWidth}w` : null;
+      const sizes = hasSize ? `(min-width: 1025px) ${320 * (width / 100)}px, ${width}vw` : null;
+
+      thumbnail = (
+        <a
+          className='media-gallery__item-thumbnail'
+          href={attachment.get('remote_url') || originalUrl}
+          onClick={this.handleClick}
+          target='_blank'
+        >
+          <img src={previewUrl} srcSet={srcSet} sizes={sizes} alt={attachment.get('description')} title={attachment.get('description')} />
+        </a>
+      );
+    } else if (attachment.get('type') === 'gifv') {
+      const autoPlay = !isIOS() && autoPlayGif;
+
+      thumbnail = (
+        <div className={classNames('media-gallery__gifv', { autoplay: autoPlay })}>
+          <video
+            className='media-gallery__item-gifv-thumbnail'
+            aria-label={attachment.get('description')}
+            role='application'
+            src={attachment.get('url')}
+            onClick={this.handleClick}
+            onMouseEnter={this.handleMouseEnter}
+            onMouseLeave={this.handleMouseLeave}
+            autoPlay={autoPlay}
+            loop
+            muted
+          />
+
+          <span className='media-gallery__gifv__label'>GIF</span>
+        </div>
+      );
+    }
+
+    return (
+      <div className={classNames('media-gallery__item', { standalone })} key={attachment.get('id')} style={{ left: left, top: top, right: right, bottom: bottom, width: `${width}%`, height: `${height}%` }}>
+        {thumbnail}
+      </div>
+    );
+  }
+
+}
+
+@injectIntl
+export default class MediaGallery extends React.PureComponent {
+
+  static propTypes = {
+    sensitive: PropTypes.bool,
+    standalone: PropTypes.bool,
+    media: ImmutablePropTypes.list.isRequired,
+    size: PropTypes.object,
+    height: PropTypes.number.isRequired,
+    onOpenMedia: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  static defaultProps = {
+    standalone: false,
+  };
+
+  state = {
+    visible: !this.props.sensitive,
+  };
+
+  componentWillReceiveProps (nextProps) {
+    if (!is(nextProps.media, this.props.media)) {
+      this.setState({ visible: !nextProps.sensitive });
+    }
+  }
+
+  handleOpen = () => {
+    this.setState({ visible: !this.state.visible });
+  }
+
+  handleClick = (index) => {
+    this.props.onOpenMedia(this.props.media, index);
+  }
+
+  handleRef = (node) => {
+    if (node && this.isStandaloneEligible()) {
+      // offsetWidth triggers a layout, so only calculate when we need to
+      this.setState({
+        width: node.offsetWidth,
+      });
+    }
+  }
+
+  isStandaloneEligible() {
+    const { media, standalone } = this.props;
+    return standalone && media.size === 1 && media.getIn([0, 'meta', 'small', 'aspect']);
+  }
+
+  render () {
+    const { media, intl, sensitive, height } = this.props;
+    const { width, visible } = this.state;
+
+    let children;
+
+    const style = {};
+
+    if (this.isStandaloneEligible()) {
+      if (!visible && width) {
+        // only need to forcibly set the height in "sensitive" mode
+        style.height = width / this.props.media.getIn([0, 'meta', 'small', 'aspect']);
+      } else {
+        // layout automatically, using image's natural aspect ratio
+        style.height = '';
+      }
+    } else {
+      // crop the image
+      style.height = height;
+    }
+
+    if (!visible) {
+      let warning;
+
+      if (sensitive) {
+        warning = <FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' />;
+      } else {
+        warning = <FormattedMessage id='status.media_hidden' defaultMessage='Media hidden' />;
+      }
+
+      children = (
+        <button className='media-spoiler' onClick={this.handleOpen} style={style} ref={this.handleRef}>
+          <span className='media-spoiler__warning'>{warning}</span>
+          <span className='media-spoiler__trigger'><FormattedMessage id='status.sensitive_toggle' defaultMessage='Click to view' /></span>
+        </button>
+      );
+    } else {
+      const size = media.take(4).size;
+
+      if (this.isStandaloneEligible()) {
+        children = <Item standalone onClick={this.handleClick} attachment={media.get(0)} />;
+      } else {
+        children = media.take(4).map((attachment, i) => <Item key={attachment.get('id')} onClick={this.handleClick} attachment={attachment} index={i} size={size} />);
+      }
+    }
+
+    return (
+      <div className='media-gallery' style={style}>
+        <div className={classNames('spoiler-button', { 'spoiler-button--visible': visible })}>
+          <IconButton title={intl.formatMessage(messages.toggle_visible)} icon={visible ? 'eye' : 'eye-slash'} overlay onClick={this.handleOpen} />
+        </div>
+
+        {children}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/missing_indicator.js b/app/javascript/mastodon/components/missing_indicator.js
new file mode 100644
index 00000000000..87df7f61ce3
--- /dev/null
+++ b/app/javascript/mastodon/components/missing_indicator.js
@@ -0,0 +1,12 @@
+import React from 'react';
+import { FormattedMessage } from 'react-intl';
+
+const MissingIndicator = () => (
+  <div className='missing-indicator'>
+    <div>
+      <FormattedMessage id='missing_indicator.label' defaultMessage='Not found' />
+    </div>
+  </div>
+);
+
+export default MissingIndicator;
diff --git a/app/javascript/mastodon/components/permalink.js b/app/javascript/mastodon/components/permalink.js
new file mode 100644
index 00000000000..d726d37a20a
--- /dev/null
+++ b/app/javascript/mastodon/components/permalink.js
@@ -0,0 +1,34 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+export default class Permalink extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    className: PropTypes.string,
+    href: PropTypes.string.isRequired,
+    to: PropTypes.string.isRequired,
+    children: PropTypes.node,
+  };
+
+  handleClick = (e) => {
+    if (this.context.router && e.button === 0 && !(e.ctrlKey || e.metaKey)) {
+      e.preventDefault();
+      this.context.router.history.push(this.props.to);
+    }
+  }
+
+  render () {
+    const { href, children, className, ...other } = this.props;
+
+    return (
+      <a target='_blank' href={href} onClick={this.handleClick} {...other} className={`permalink${className ? ' ' + className : ''}`}>
+        {children}
+      </a>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/relative_timestamp.js b/app/javascript/mastodon/components/relative_timestamp.js
new file mode 100644
index 00000000000..51588e78ca1
--- /dev/null
+++ b/app/javascript/mastodon/components/relative_timestamp.js
@@ -0,0 +1,147 @@
+import React from 'react';
+import { injectIntl, defineMessages } from 'react-intl';
+import PropTypes from 'prop-types';
+
+const messages = defineMessages({
+  just_now: { id: 'relative_time.just_now', defaultMessage: 'now' },
+  seconds: { id: 'relative_time.seconds', defaultMessage: '{number}s' },
+  minutes: { id: 'relative_time.minutes', defaultMessage: '{number}m' },
+  hours: { id: 'relative_time.hours', defaultMessage: '{number}h' },
+  days: { id: 'relative_time.days', defaultMessage: '{number}d' },
+});
+
+const dateFormatOptions = {
+  hour12: false,
+  year: 'numeric',
+  month: 'short',
+  day: '2-digit',
+  hour: '2-digit',
+  minute: '2-digit',
+};
+
+const shortDateFormatOptions = {
+  month: 'numeric',
+  day: 'numeric',
+};
+
+const SECOND = 1000;
+const MINUTE = 1000 * 60;
+const HOUR   = 1000 * 60 * 60;
+const DAY    = 1000 * 60 * 60 * 24;
+
+const MAX_DELAY = 2147483647;
+
+const selectUnits = delta => {
+  const absDelta = Math.abs(delta);
+
+  if (absDelta < MINUTE) {
+    return 'second';
+  } else if (absDelta < HOUR) {
+    return 'minute';
+  } else if (absDelta < DAY) {
+    return 'hour';
+  }
+
+  return 'day';
+};
+
+const getUnitDelay = units => {
+  switch (units) {
+  case 'second':
+    return SECOND;
+  case 'minute':
+    return MINUTE;
+  case 'hour':
+    return HOUR;
+  case 'day':
+    return DAY;
+  default:
+    return MAX_DELAY;
+  }
+};
+
+@injectIntl
+export default class RelativeTimestamp extends React.Component {
+
+  static propTypes = {
+    intl: PropTypes.object.isRequired,
+    timestamp: PropTypes.string.isRequired,
+  };
+
+  state = {
+    now: this.props.intl.now(),
+  };
+
+  shouldComponentUpdate (nextProps, nextState) {
+    // As of right now the locale doesn't change without a new page load,
+    // but we might as well check in case that ever changes.
+    return this.props.timestamp !== nextProps.timestamp ||
+      this.props.intl.locale !== nextProps.intl.locale ||
+      this.state.now !== nextState.now;
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (this.props.timestamp !== nextProps.timestamp) {
+      this.setState({ now: this.props.intl.now() });
+    }
+  }
+
+  componentDidMount () {
+    this._scheduleNextUpdate(this.props, this.state);
+  }
+
+  componentWillUpdate (nextProps, nextState) {
+    this._scheduleNextUpdate(nextProps, nextState);
+  }
+
+  componentWillUnmount () {
+    clearTimeout(this._timer);
+  }
+
+  _scheduleNextUpdate (props, state) {
+    clearTimeout(this._timer);
+
+    const { timestamp }  = props;
+    const delta          = (new Date(timestamp)).getTime() - state.now;
+    const unitDelay      = getUnitDelay(selectUnits(delta));
+    const unitRemainder  = Math.abs(delta % unitDelay);
+    const updateInterval = 1000 * 10;
+    const delay          = delta < 0 ? Math.max(updateInterval, unitDelay - unitRemainder) : Math.max(updateInterval, unitRemainder);
+
+    this._timer = setTimeout(() => {
+      this.setState({ now: this.props.intl.now() });
+    }, delay);
+  }
+
+  render () {
+    const { timestamp, intl } = this.props;
+
+    const date  = new Date(timestamp);
+    const delta = this.state.now - date.getTime();
+
+    let relativeTime;
+
+    if (delta < 10 * SECOND) {
+      relativeTime = intl.formatMessage(messages.just_now);
+    } else if (delta < 3 * DAY) {
+      if (delta < MINUTE) {
+        relativeTime = intl.formatMessage(messages.seconds, { number: Math.floor(delta / SECOND) });
+      } else if (delta < HOUR) {
+        relativeTime = intl.formatMessage(messages.minutes, { number: Math.floor(delta / MINUTE) });
+      } else if (delta < DAY) {
+        relativeTime = intl.formatMessage(messages.hours, { number: Math.floor(delta / HOUR) });
+      } else {
+        relativeTime = intl.formatMessage(messages.days, { number: Math.floor(delta / DAY) });
+      }
+    } else {
+      relativeTime = intl.formatDate(date, shortDateFormatOptions);
+    }
+
+    return (
+      <time dateTime={timestamp} title={intl.formatDate(date, dateFormatOptions)}>
+        {relativeTime}
+      </time>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/scrollable_list.js b/app/javascript/mastodon/components/scrollable_list.js
new file mode 100644
index 00000000000..71228ca6cb8
--- /dev/null
+++ b/app/javascript/mastodon/components/scrollable_list.js
@@ -0,0 +1,198 @@
+import React, { PureComponent } from 'react';
+import { ScrollContainer } from 'react-router-scroll-4';
+import PropTypes from 'prop-types';
+import IntersectionObserverArticleContainer from '../containers/intersection_observer_article_container';
+import LoadMore from './load_more';
+import IntersectionObserverWrapper from '../features/ui/util/intersection_observer_wrapper';
+import { throttle } from 'lodash';
+import { List as ImmutableList } from 'immutable';
+import classNames from 'classnames';
+import { attachFullscreenListener, detachFullscreenListener, isFullscreen } from '../features/ui/util/fullscreen';
+
+export default class ScrollableList extends PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    scrollKey: PropTypes.string.isRequired,
+    onScrollToBottom: PropTypes.func,
+    onScrollToTop: PropTypes.func,
+    onScroll: PropTypes.func,
+    trackScroll: PropTypes.bool,
+    shouldUpdateScroll: PropTypes.func,
+    isLoading: PropTypes.bool,
+    hasMore: PropTypes.bool,
+    prepend: PropTypes.node,
+    emptyMessage: PropTypes.node,
+    children: PropTypes.node,
+  };
+
+  static defaultProps = {
+    trackScroll: true,
+  };
+
+  state = {
+    lastMouseMove: null,
+  };
+
+  intersectionObserverWrapper = new IntersectionObserverWrapper();
+
+  handleScroll = throttle(() => {
+    if (this.node) {
+      const { scrollTop, scrollHeight, clientHeight } = this.node;
+      const offset = scrollHeight - scrollTop - clientHeight;
+      this._oldScrollPosition = scrollHeight - scrollTop;
+
+      if (400 > offset && this.props.onScrollToBottom && !this.props.isLoading) {
+        this.props.onScrollToBottom();
+      } else if (scrollTop < 100 && this.props.onScrollToTop) {
+        this.props.onScrollToTop();
+      } else if (this.props.onScroll) {
+        this.props.onScroll();
+      }
+    }
+  }, 150, {
+    trailing: true,
+  });
+
+  handleMouseMove = throttle(() => {
+    this._lastMouseMove = new Date();
+  }, 300);
+
+  handleMouseLeave = () => {
+    this._lastMouseMove = null;
+  }
+
+  componentDidMount () {
+    this.attachScrollListener();
+    this.attachIntersectionObserver();
+    attachFullscreenListener(this.onFullScreenChange);
+
+    // Handle initial scroll posiiton
+    this.handleScroll();
+  }
+
+  componentDidUpdate (prevProps) {
+    const someItemInserted = React.Children.count(prevProps.children) > 0 &&
+      React.Children.count(prevProps.children) < React.Children.count(this.props.children) &&
+      this.getFirstChildKey(prevProps) !== this.getFirstChildKey(this.props);
+
+    // Reset the scroll position when a new child comes in in order not to
+    // jerk the scrollbar around if you're already scrolled down the page.
+    if (someItemInserted && this._oldScrollPosition && this.node.scrollTop > 0) {
+      const newScrollTop = this.node.scrollHeight - this._oldScrollPosition;
+
+      if (this.node.scrollTop !== newScrollTop) {
+        this.node.scrollTop = newScrollTop;
+      }
+    } else {
+      this._oldScrollPosition = this.node.scrollHeight - this.node.scrollTop;
+    }
+  }
+
+  componentWillUnmount () {
+    this.detachScrollListener();
+    this.detachIntersectionObserver();
+    detachFullscreenListener(this.onFullScreenChange);
+  }
+
+  onFullScreenChange = () => {
+    this.setState({ fullscreen: isFullscreen() });
+  }
+
+  attachIntersectionObserver () {
+    this.intersectionObserverWrapper.connect({
+      root: this.node,
+      rootMargin: '300% 0px',
+    });
+  }
+
+  detachIntersectionObserver () {
+    this.intersectionObserverWrapper.disconnect();
+  }
+
+  attachScrollListener () {
+    this.node.addEventListener('scroll', this.handleScroll);
+  }
+
+  detachScrollListener () {
+    this.node.removeEventListener('scroll', this.handleScroll);
+  }
+
+  getFirstChildKey (props) {
+    const { children } = props;
+    let firstChild = children;
+    if (children instanceof ImmutableList) {
+      firstChild = children.get(0);
+    } else if (Array.isArray(children)) {
+      firstChild = children[0];
+    }
+    return firstChild && firstChild.key;
+  }
+
+  setRef = (c) => {
+    this.node = c;
+  }
+
+  handleLoadMore = (e) => {
+    e.preventDefault();
+    this.props.onScrollToBottom();
+  }
+
+  _recentlyMoved () {
+    return this._lastMouseMove !== null && ((new Date()) - this._lastMouseMove < 600);
+  }
+
+  render () {
+    const { children, scrollKey, trackScroll, shouldUpdateScroll, isLoading, hasMore, prepend, emptyMessage } = this.props;
+    const { fullscreen } = this.state;
+    const childrenCount = React.Children.count(children);
+
+    const loadMore     = (hasMore && childrenCount > 0) ? <LoadMore visible={!isLoading} onClick={this.handleLoadMore} /> : null;
+    let scrollableArea = null;
+
+    if (isLoading || childrenCount > 0 || !emptyMessage) {
+      scrollableArea = (
+        <div className={classNames('scrollable', { fullscreen })} ref={this.setRef} onMouseMove={this.handleMouseMove} onMouseLeave={this.handleMouseLeave}>
+          <div role='feed' className='item-list'>
+            {prepend}
+
+            {React.Children.map(this.props.children, (child, index) => (
+              <IntersectionObserverArticleContainer
+                key={child.key}
+                id={child.key}
+                index={index}
+                listLength={childrenCount}
+                intersectionObserverWrapper={this.intersectionObserverWrapper}
+                saveHeightKey={trackScroll ? `${this.context.router.route.location.key}:${scrollKey}` : null}
+              >
+                {child}
+              </IntersectionObserverArticleContainer>
+            ))}
+
+            {loadMore}
+          </div>
+        </div>
+      );
+    } else {
+      scrollableArea = (
+        <div className='empty-column-indicator' ref={this.setRef}>
+          {emptyMessage}
+        </div>
+      );
+    }
+
+    if (trackScroll) {
+      return (
+        <ScrollContainer scrollKey={scrollKey} shouldUpdateScroll={shouldUpdateScroll}>
+          {scrollableArea}
+        </ScrollContainer>
+      );
+    } else {
+      return scrollableArea;
+    }
+  }
+
+}
diff --git a/app/javascript/mastodon/components/setting_text.js b/app/javascript/mastodon/components/setting_text.js
new file mode 100644
index 00000000000..a6dde4c0f10
--- /dev/null
+++ b/app/javascript/mastodon/components/setting_text.js
@@ -0,0 +1,34 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+
+export default class SettingText extends React.PureComponent {
+
+  static propTypes = {
+    settings: ImmutablePropTypes.map.isRequired,
+    settingKey: PropTypes.array.isRequired,
+    label: PropTypes.string.isRequired,
+    onChange: PropTypes.func.isRequired,
+  };
+
+  handleChange = (e) => {
+    this.props.onChange(this.props.settingKey, e.target.value);
+  }
+
+  render () {
+    const { settings, settingKey, label } = this.props;
+
+    return (
+      <label>
+        <span style={{ display: 'none' }}>{label}</span>
+        <input
+          className='setting-text'
+          value={settings.getIn(settingKey)}
+          onChange={this.handleChange}
+          placeholder={label}
+        />
+      </label>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/status.js b/app/javascript/mastodon/components/status.js
new file mode 100644
index 00000000000..d23ff87fafc
--- /dev/null
+++ b/app/javascript/mastodon/components/status.js
@@ -0,0 +1,246 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import Avatar from './avatar';
+import AvatarOverlay from './avatar_overlay';
+import RelativeTimestamp from './relative_timestamp';
+import DisplayName from './display_name';
+import StatusContent from './status_content';
+import StatusActionBar from './status_action_bar';
+import { FormattedMessage } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { MediaGallery, Video } from '../features/ui/util/async-components';
+import { HotKeys } from 'react-hotkeys';
+import classNames from 'classnames';
+
+// We use the component (and not the container) since we do not want
+// to use the progress bar to show download progress
+import Bundle from '../features/ui/components/bundle';
+
+export default class Status extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    status: ImmutablePropTypes.map,
+    account: ImmutablePropTypes.map,
+    onReply: PropTypes.func,
+    onFavourite: PropTypes.func,
+    onReblog: PropTypes.func,
+    onDelete: PropTypes.func,
+    onPin: PropTypes.func,
+    onOpenMedia: PropTypes.func,
+    onOpenVideo: PropTypes.func,
+    onBlock: PropTypes.func,
+    onEmbed: PropTypes.func,
+    onHeightChange: PropTypes.func,
+    muted: PropTypes.bool,
+    hidden: PropTypes.bool,
+    onMoveUp: PropTypes.func,
+    onMoveDown: PropTypes.func,
+  };
+
+  state = {
+    isExpanded: false,
+  }
+
+  // Avoid checking props that are functions (and whose equality will always
+  // evaluate to false. See react-immutable-pure-component for usage.
+  updateOnProps = [
+    'status',
+    'account',
+    'muted',
+    'hidden',
+  ]
+
+  updateOnStates = ['isExpanded']
+
+  handleClick = () => {
+    if (!this.context.router) {
+      return;
+    }
+
+    const { status } = this.props;
+    this.context.router.history.push(`/statuses/${status.getIn(['reblog', 'id'], status.get('id'))}`);
+  }
+
+  handleAccountClick = (e) => {
+    if (this.context.router && e.button === 0) {
+      const id = e.currentTarget.getAttribute('data-id');
+      e.preventDefault();
+      this.context.router.history.push(`/accounts/${id}`);
+    }
+  }
+
+  handleExpandedToggle = () => {
+    this.setState({ isExpanded: !this.state.isExpanded });
+  };
+
+  renderLoadingMediaGallery () {
+    return <div className='media_gallery' style={{ height: '110px' }} />;
+  }
+
+  renderLoadingVideoPlayer () {
+    return <div className='media-spoiler-video' style={{ height: '110px' }} />;
+  }
+
+  handleOpenVideo = startTime => {
+    this.props.onOpenVideo(this._properStatus().getIn(['media_attachments', 0]), startTime);
+  }
+
+  handleHotkeyReply = e => {
+    e.preventDefault();
+    this.props.onReply(this._properStatus(), this.context.router.history);
+  }
+
+  handleHotkeyFavourite = () => {
+    this.props.onFavourite(this._properStatus());
+  }
+
+  handleHotkeyBoost = e => {
+    this.props.onReblog(this._properStatus(), e);
+  }
+
+  handleHotkeyMention = e => {
+    e.preventDefault();
+    this.props.onMention(this._properStatus().get('account'), this.context.router.history);
+  }
+
+  handleHotkeyOpen = () => {
+    this.context.router.history.push(`/statuses/${this._properStatus().get('id')}`);
+  }
+
+  handleHotkeyOpenProfile = () => {
+    this.context.router.history.push(`/accounts/${this._properStatus().getIn(['account', 'id'])}`);
+  }
+
+  handleHotkeyMoveUp = () => {
+    this.props.onMoveUp(this.props.status.get('id'));
+  }
+
+  handleHotkeyMoveDown = () => {
+    this.props.onMoveDown(this.props.status.get('id'));
+  }
+
+  _properStatus () {
+    const { status } = this.props;
+
+    if (status.get('reblog', null) !== null && typeof status.get('reblog') === 'object') {
+      return status.get('reblog');
+    } else {
+      return status;
+    }
+  }
+
+  render () {
+    let media = null;
+    let statusAvatar, prepend;
+
+    const { hidden }     = this.props;
+    const { isExpanded } = this.state;
+
+    let { status, account, ...other } = this.props;
+
+    if (status === null) {
+      return null;
+    }
+
+    if (hidden) {
+      return (
+        <div>
+          {status.getIn(['account', 'display_name']) || status.getIn(['account', 'username'])}
+          {status.get('content')}
+        </div>
+      );
+    }
+
+    if (status.get('reblog', null) !== null && typeof status.get('reblog') === 'object') {
+      const display_name_html = { __html: status.getIn(['account', 'display_name_html']) };
+
+      prepend = (
+        <div className='status__prepend'>
+          <div className='status__prepend-icon-wrapper'><i className='fa fa-fw fa-retweet status__prepend-icon' /></div>
+          <FormattedMessage id='status.reblogged_by' defaultMessage='{name} boosted' values={{ name: <a onClick={this.handleAccountClick} data-id={status.getIn(['account', 'id'])} href={status.getIn(['account', 'url'])} className='status__display-name muted'><strong dangerouslySetInnerHTML={display_name_html} /></a> }} />
+        </div>
+      );
+
+      account = status.get('account');
+      status  = status.get('reblog');
+    }
+
+    if (status.get('media_attachments').size > 0 && !this.props.muted) {
+      if (status.get('media_attachments').some(item => item.get('type') === 'unknown')) {
+
+      } else if (status.getIn(['media_attachments', 0, 'type']) === 'video') {
+        const video = status.getIn(['media_attachments', 0]);
+
+        media = (
+          <Bundle fetchComponent={Video} loading={this.renderLoadingVideoPlayer} >
+            {Component => <Component
+              preview={video.get('preview_url')}
+              src={video.get('url')}
+              width={239}
+              height={110}
+              sensitive={status.get('sensitive')}
+              onOpenVideo={this.handleOpenVideo}
+            />}
+          </Bundle>
+        );
+      } else {
+        media = (
+          <Bundle fetchComponent={MediaGallery} loading={this.renderLoadingMediaGallery} >
+            {Component => <Component media={status.get('media_attachments')} sensitive={status.get('sensitive')} height={110} onOpenMedia={this.props.onOpenMedia} />}
+          </Bundle>
+        );
+      }
+    }
+
+    if (account === undefined || account === null) {
+      statusAvatar = <Avatar account={status.get('account')} size={48} />;
+    }else{
+      statusAvatar = <AvatarOverlay account={status.get('account')} friend={account} />;
+    }
+
+    const handlers = this.props.muted ? {} : {
+      reply: this.handleHotkeyReply,
+      favourite: this.handleHotkeyFavourite,
+      boost: this.handleHotkeyBoost,
+      mention: this.handleHotkeyMention,
+      open: this.handleHotkeyOpen,
+      openProfile: this.handleHotkeyOpenProfile,
+      moveUp: this.handleHotkeyMoveUp,
+      moveDown: this.handleHotkeyMoveDown,
+    };
+
+    return (
+      <HotKeys handlers={handlers}>
+        <div className={classNames('status__wrapper', `status__wrapper-${status.get('visibility')}`, { focusable: !this.props.muted })} tabIndex={this.props.muted ? null : 0}>
+          {prepend}
+
+          <div className={classNames('status', `status-${status.get('visibility')}`, { muted: this.props.muted })} data-id={status.get('id')}>
+            <div className='status__info'>
+              <a href={status.get('url')} className='status__relative-time' target='_blank' rel='noopener'><RelativeTimestamp timestamp={status.get('created_at')} /></a>
+
+              <a onClick={this.handleAccountClick} target='_blank' data-id={status.getIn(['account', 'id'])} href={status.getIn(['account', 'url'])} title={status.getIn(['account', 'acct'])} className='status__display-name'>
+                <div className='status__avatar'>
+                  {statusAvatar}
+                </div>
+
+                <DisplayName account={status.get('account')} />
+              </a>
+            </div>
+
+            <StatusContent status={status} onClick={this.handleClick} expanded={isExpanded} onExpandedToggle={this.handleExpandedToggle} />
+
+            {media}
+
+            <StatusActionBar status={status} account={account} {...other} />
+          </div>
+        </div>
+      </HotKeys>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/status_action_bar.js b/app/javascript/mastodon/components/status_action_bar.js
new file mode 100644
index 00000000000..7021c198ee2
--- /dev/null
+++ b/app/javascript/mastodon/components/status_action_bar.js
@@ -0,0 +1,188 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import IconButton from './icon_button';
+import DropdownMenuContainer from '../containers/dropdown_menu_container';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { me } from '../initial_state';
+
+const messages = defineMessages({
+  delete: { id: 'status.delete', defaultMessage: 'Delete' },
+  mention: { id: 'status.mention', defaultMessage: 'Mention @{name}' },
+  mute: { id: 'account.mute', defaultMessage: 'Mute @{name}' },
+  block: { id: 'account.block', defaultMessage: 'Block @{name}' },
+  reply: { id: 'status.reply', defaultMessage: 'Reply' },
+  share: { id: 'status.share', defaultMessage: 'Share' },
+  more: { id: 'status.more', defaultMessage: 'More' },
+  replyAll: { id: 'status.replyAll', defaultMessage: 'Reply to thread' },
+  reblog: { id: 'status.reblog', defaultMessage: 'Boost' },
+  cannot_reblog: { id: 'status.cannot_reblog', defaultMessage: 'This post cannot be boosted' },
+  favourite: { id: 'status.favourite', defaultMessage: 'Favourite' },
+  open: { id: 'status.open', defaultMessage: 'Expand this status' },
+  report: { id: 'status.report', defaultMessage: 'Report @{name}' },
+  muteConversation: { id: 'status.mute_conversation', defaultMessage: 'Mute conversation' },
+  unmuteConversation: { id: 'status.unmute_conversation', defaultMessage: 'Unmute conversation' },
+  pin: { id: 'status.pin', defaultMessage: 'Pin on profile' },
+  unpin: { id: 'status.unpin', defaultMessage: 'Unpin from profile' },
+  embed: { id: 'status.embed', defaultMessage: 'Embed' },
+});
+
+@injectIntl
+export default class StatusActionBar extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    status: ImmutablePropTypes.map.isRequired,
+    onReply: PropTypes.func,
+    onFavourite: PropTypes.func,
+    onReblog: PropTypes.func,
+    onDelete: PropTypes.func,
+    onMention: PropTypes.func,
+    onMute: PropTypes.func,
+    onBlock: PropTypes.func,
+    onReport: PropTypes.func,
+    onEmbed: PropTypes.func,
+    onMuteConversation: PropTypes.func,
+    onPin: PropTypes.func,
+    withDismiss: PropTypes.bool,
+    intl: PropTypes.object.isRequired,
+  };
+
+  // Avoid checking props that are functions (and whose equality will always
+  // evaluate to false. See react-immutable-pure-component for usage.
+  updateOnProps = [
+    'status',
+    'withDismiss',
+  ]
+
+  handleReplyClick = () => {
+    this.props.onReply(this.props.status, this.context.router.history);
+  }
+
+  handleShareClick = () => {
+    navigator.share({
+      text: this.props.status.get('search_index'),
+      url: this.props.status.get('url'),
+    });
+  }
+
+  handleFavouriteClick = () => {
+    this.props.onFavourite(this.props.status);
+  }
+
+  handleReblogClick = (e) => {
+    this.props.onReblog(this.props.status, e);
+  }
+
+  handleDeleteClick = () => {
+    this.props.onDelete(this.props.status);
+  }
+
+  handlePinClick = () => {
+    this.props.onPin(this.props.status);
+  }
+
+  handleMentionClick = () => {
+    this.props.onMention(this.props.status.get('account'), this.context.router.history);
+  }
+
+  handleMuteClick = () => {
+    this.props.onMute(this.props.status.get('account'));
+  }
+
+  handleBlockClick = () => {
+    this.props.onBlock(this.props.status.get('account'));
+  }
+
+  handleOpen = () => {
+    this.context.router.history.push(`/statuses/${this.props.status.get('id')}`);
+  }
+
+  handleEmbed = () => {
+    this.props.onEmbed(this.props.status);
+  }
+
+  handleReport = () => {
+    this.props.onReport(this.props.status);
+  }
+
+  handleConversationMuteClick = () => {
+    this.props.onMuteConversation(this.props.status);
+  }
+
+  render () {
+    const { status, intl, withDismiss } = this.props;
+
+    const mutingConversation = status.get('muted');
+    const anonymousAccess    = !me;
+    const publicStatus       = ['public', 'unlisted'].includes(status.get('visibility'));
+
+    let menu = [];
+    let reblogIcon = 'retweet';
+    let replyIcon;
+    let replyTitle;
+
+    menu.push({ text: intl.formatMessage(messages.open), action: this.handleOpen });
+
+    if (publicStatus) {
+      menu.push({ text: intl.formatMessage(messages.embed), action: this.handleEmbed });
+    }
+
+    menu.push(null);
+
+    if (status.getIn(['account', 'id']) === me || withDismiss) {
+      menu.push({ text: intl.formatMessage(mutingConversation ? messages.unmuteConversation : messages.muteConversation), action: this.handleConversationMuteClick });
+      menu.push(null);
+    }
+
+    if (status.getIn(['account', 'id']) === me) {
+      if (publicStatus) {
+        menu.push({ text: intl.formatMessage(status.get('pinned') ? messages.unpin : messages.pin), action: this.handlePinClick });
+      }
+
+      menu.push({ text: intl.formatMessage(messages.delete), action: this.handleDeleteClick });
+    } else {
+      menu.push({ text: intl.formatMessage(messages.mention, { name: status.getIn(['account', 'username']) }), action: this.handleMentionClick });
+      menu.push(null);
+      menu.push({ text: intl.formatMessage(messages.mute, { name: status.getIn(['account', 'username']) }), action: this.handleMuteClick });
+      menu.push({ text: intl.formatMessage(messages.block, { name: status.getIn(['account', 'username']) }), action: this.handleBlockClick });
+      menu.push({ text: intl.formatMessage(messages.report, { name: status.getIn(['account', 'username']) }), action: this.handleReport });
+    }
+
+    if (status.get('visibility') === 'direct') {
+      reblogIcon = 'envelope';
+    } else if (status.get('visibility') === 'private') {
+      reblogIcon = 'lock';
+    }
+
+    if (status.get('in_reply_to_id', null) === null) {
+      replyIcon = 'reply';
+      replyTitle = intl.formatMessage(messages.reply);
+    } else {
+      replyIcon = 'reply-all';
+      replyTitle = intl.formatMessage(messages.replyAll);
+    }
+
+    const shareButton = ('share' in navigator) && status.get('visibility') === 'public' && (
+      <IconButton className='status__action-bar-button' title={intl.formatMessage(messages.share)} icon='share-alt' onClick={this.handleShareClick} />
+    );
+
+    return (
+      <div className='status__action-bar'>
+        <IconButton className='status__action-bar-button' disabled={anonymousAccess} title={replyTitle} icon={replyIcon} onClick={this.handleReplyClick} />
+        <IconButton className='status__action-bar-button' disabled={anonymousAccess || !publicStatus} active={status.get('reblogged')} pressed={status.get('reblogged')} title={!publicStatus ? intl.formatMessage(messages.cannot_reblog) : intl.formatMessage(messages.reblog)} icon={reblogIcon} onClick={this.handleReblogClick} />
+        <IconButton className='status__action-bar-button star-icon' disabled={anonymousAccess} animate active={status.get('favourited')} pressed={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' onClick={this.handleFavouriteClick} />
+        {shareButton}
+
+        <div className='status__action-bar-dropdown'>
+          <DropdownMenuContainer disabled={anonymousAccess} status={status} items={menu} icon='ellipsis-h' size={18} direction='right' ariaLabel={intl.formatMessage(messages.more)} />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/components/status_content.js b/app/javascript/mastodon/components/status_content.js
new file mode 100644
index 00000000000..3b815563295
--- /dev/null
+++ b/app/javascript/mastodon/components/status_content.js
@@ -0,0 +1,185 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import { isRtl } from '../rtl';
+import { FormattedMessage } from 'react-intl';
+import Permalink from './permalink';
+import classnames from 'classnames';
+
+export default class StatusContent extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    status: ImmutablePropTypes.map.isRequired,
+    expanded: PropTypes.bool,
+    onExpandedToggle: PropTypes.func,
+    onClick: PropTypes.func,
+  };
+
+  state = {
+    hidden: true,
+  };
+
+  _updateStatusLinks () {
+    const node  = this.node;
+    const links = node.querySelectorAll('a');
+
+    for (var i = 0; i < links.length; ++i) {
+      let link = links[i];
+      if (link.classList.contains('status-link')) {
+        continue;
+      }
+      link.classList.add('status-link');
+
+      let mention = this.props.status.get('mentions').find(item => link.href === item.get('url'));
+
+      if (mention) {
+        link.addEventListener('click', this.onMentionClick.bind(this, mention), false);
+        link.setAttribute('title', mention.get('acct'));
+      } else if (link.textContent[0] === '#' || (link.previousSibling && link.previousSibling.textContent && link.previousSibling.textContent[link.previousSibling.textContent.length - 1] === '#')) {
+        link.addEventListener('click', this.onHashtagClick.bind(this, link.text), false);
+      } else {
+        link.setAttribute('title', link.href);
+      }
+
+      link.setAttribute('target', '_blank');
+      link.setAttribute('rel', 'noopener');
+    }
+  }
+
+  componentDidMount () {
+    this._updateStatusLinks();
+  }
+
+  componentDidUpdate () {
+    this._updateStatusLinks();
+  }
+
+  onMentionClick = (mention, e) => {
+    if (this.context.router && e.button === 0) {
+      e.preventDefault();
+      this.context.router.history.push(`/accounts/${mention.get('id')}`);
+    }
+  }
+
+  onHashtagClick = (hashtag, e) => {
+    hashtag = hashtag.replace(/^#/, '').toLowerCase();
+
+    if (this.context.router && e.button === 0) {
+      e.preventDefault();
+      this.context.router.history.push(`/timelines/tag/${hashtag}`);
+    }
+  }
+
+  handleMouseDown = (e) => {
+    this.startXY = [e.clientX, e.clientY];
+  }
+
+  handleMouseUp = (e) => {
+    if (!this.startXY) {
+      return;
+    }
+
+    const [ startX, startY ] = this.startXY;
+    const [ deltaX, deltaY ] = [Math.abs(e.clientX - startX), Math.abs(e.clientY - startY)];
+
+    if (e.target.localName === 'button' || e.target.localName === 'a' || (e.target.parentNode && (e.target.parentNode.localName === 'button' || e.target.parentNode.localName === 'a'))) {
+      return;
+    }
+
+    if (deltaX + deltaY < 5 && e.button === 0 && this.props.onClick) {
+      this.props.onClick();
+    }
+
+    this.startXY = null;
+  }
+
+  handleSpoilerClick = (e) => {
+    e.preventDefault();
+
+    if (this.props.onExpandedToggle) {
+      // The parent manages the state
+      this.props.onExpandedToggle();
+    } else {
+      this.setState({ hidden: !this.state.hidden });
+    }
+  }
+
+  setRef = (c) => {
+    this.node = c;
+  }
+
+  render () {
+    const { status } = this.props;
+
+    const hidden = this.props.onExpandedToggle ? !this.props.expanded : this.state.hidden;
+
+    const content = { __html: status.get('contentHtml') };
+    const spoilerContent = { __html: status.get('spoilerHtml') };
+    const directionStyle = { direction: 'ltr' };
+    const classNames = classnames('status__content', {
+      'status__content--with-action': this.props.onClick && this.context.router,
+      'status__content--with-spoiler': status.get('spoiler_text').length > 0,
+    });
+
+    if (isRtl(status.get('search_index'))) {
+      directionStyle.direction = 'rtl';
+    }
+
+    if (status.get('spoiler_text').length > 0) {
+      let mentionsPlaceholder = '';
+
+      const mentionLinks = status.get('mentions').map(item => (
+        <Permalink to={`/accounts/${item.get('id')}`} href={item.get('url')} key={item.get('id')} className='mention'>
+          @<span>{item.get('username')}</span>
+        </Permalink>
+      )).reduce((aggregate, item) => [...aggregate, item, ' '], []);
+
+      const toggleText = hidden ? <FormattedMessage id='status.show_more' defaultMessage='Show more' /> : <FormattedMessage id='status.show_less' defaultMessage='Show less' />;
+
+      if (hidden) {
+        mentionsPlaceholder = <div>{mentionLinks}</div>;
+      }
+
+      return (
+        <div className={classNames} ref={this.setRef} tabIndex='0' onMouseDown={this.handleMouseDown} onMouseUp={this.handleMouseUp}>
+          <p style={{ marginBottom: hidden && status.get('mentions').isEmpty() ? '0px' : null }}>
+            <span dangerouslySetInnerHTML={spoilerContent} />
+            {' '}
+            <button tabIndex='0' className='status__content__spoiler-link' onClick={this.handleSpoilerClick}>{toggleText}</button>
+          </p>
+
+          {mentionsPlaceholder}
+
+          <div tabIndex={!hidden ? 0 : null} className={`status__content__text ${!hidden ? 'status__content__text--visible' : ''}`} style={directionStyle} dangerouslySetInnerHTML={content} />
+        </div>
+      );
+    } else if (this.props.onClick) {
+      return (
+        <div
+          ref={this.setRef}
+          tabIndex='0'
+          className={classNames}
+          style={directionStyle}
+          onMouseDown={this.handleMouseDown}
+          onMouseUp={this.handleMouseUp}
+          dangerouslySetInnerHTML={content}
+        />
+      );
+    } else {
+      return (
+        <div
+          tabIndex='0'
+          ref={this.setRef}
+          className='status__content'
+          style={directionStyle}
+          dangerouslySetInnerHTML={content}
+        />
+      );
+    }
+  }
+
+}
diff --git a/app/javascript/mastodon/components/status_list.js b/app/javascript/mastodon/components/status_list.js
new file mode 100644
index 00000000000..58a7b228a94
--- /dev/null
+++ b/app/javascript/mastodon/components/status_list.js
@@ -0,0 +1,72 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import StatusContainer from '../containers/status_container';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import ScrollableList from './scrollable_list';
+
+export default class StatusList extends ImmutablePureComponent {
+
+  static propTypes = {
+    scrollKey: PropTypes.string.isRequired,
+    statusIds: ImmutablePropTypes.list.isRequired,
+    onScrollToBottom: PropTypes.func,
+    onScrollToTop: PropTypes.func,
+    onScroll: PropTypes.func,
+    trackScroll: PropTypes.bool,
+    shouldUpdateScroll: PropTypes.func,
+    isLoading: PropTypes.bool,
+    hasMore: PropTypes.bool,
+    prepend: PropTypes.node,
+    emptyMessage: PropTypes.node,
+  };
+
+  static defaultProps = {
+    trackScroll: true,
+  };
+
+  handleMoveUp = id => {
+    const elementIndex = this.props.statusIds.indexOf(id) - 1;
+    this._selectChild(elementIndex);
+  }
+
+  handleMoveDown = id => {
+    const elementIndex = this.props.statusIds.indexOf(id) + 1;
+    this._selectChild(elementIndex);
+  }
+
+  _selectChild (index) {
+    const element = this.node.node.querySelector(`article:nth-of-type(${index + 1}) .focusable`);
+
+    if (element) {
+      element.focus();
+    }
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  render () {
+    const { statusIds, ...other } = this.props;
+    const { isLoading } = other;
+
+    const scrollableContent = (isLoading || statusIds.size > 0) ? (
+      statusIds.map((statusId) => (
+        <StatusContainer
+          key={statusId}
+          id={statusId}
+          onMoveUp={this.handleMoveUp}
+          onMoveDown={this.handleMoveDown}
+        />
+      ))
+    ) : null;
+
+    return (
+      <ScrollableList {...other} ref={this.setRef}>
+        {scrollableContent}
+      </ScrollableList>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/containers/account_container.js b/app/javascript/mastodon/containers/account_container.js
new file mode 100644
index 00000000000..5a5136dd186
--- /dev/null
+++ b/app/javascript/mastodon/containers/account_container.js
@@ -0,0 +1,72 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import { makeGetAccount } from '../selectors';
+import Account from '../components/account';
+import {
+  followAccount,
+  unfollowAccount,
+  blockAccount,
+  unblockAccount,
+  muteAccount,
+  unmuteAccount,
+} from '../actions/accounts';
+import { openModal } from '../actions/modal';
+import { initMuteModal } from '../actions/mutes';
+import { unfollowModal } from '../initial_state';
+
+const messages = defineMessages({
+  unfollowConfirm: { id: 'confirmations.unfollow.confirm', defaultMessage: 'Unfollow' },
+});
+
+const makeMapStateToProps = () => {
+  const getAccount = makeGetAccount();
+
+  const mapStateToProps = (state, props) => ({
+    account: getAccount(state, props.id),
+  });
+
+  return mapStateToProps;
+};
+
+const mapDispatchToProps = (dispatch, { intl }) => ({
+
+  onFollow (account) {
+    if (account.getIn(['relationship', 'following']) || account.getIn(['relationship', 'requested'])) {
+      if (unfollowModal) {
+        dispatch(openModal('CONFIRM', {
+          message: <FormattedMessage id='confirmations.unfollow.message' defaultMessage='Are you sure you want to unfollow {name}?' values={{ name: <strong>@{account.get('acct')}</strong> }} />,
+          confirm: intl.formatMessage(messages.unfollowConfirm),
+          onConfirm: () => dispatch(unfollowAccount(account.get('id'))),
+        }));
+      } else {
+        dispatch(unfollowAccount(account.get('id')));
+      }
+    } else {
+      dispatch(followAccount(account.get('id')));
+    }
+  },
+
+  onBlock (account) {
+    if (account.getIn(['relationship', 'blocking'])) {
+      dispatch(unblockAccount(account.get('id')));
+    } else {
+      dispatch(blockAccount(account.get('id')));
+    }
+  },
+
+  onMute (account) {
+    if (account.getIn(['relationship', 'muting'])) {
+      dispatch(unmuteAccount(account.get('id')));
+    } else {
+      dispatch(initMuteModal(account));
+    }
+  },
+
+
+  onMuteNotifications (account, notifications) {
+    dispatch(muteAccount(account.get('id'), notifications));
+  },
+});
+
+export default injectIntl(connect(makeMapStateToProps, mapDispatchToProps)(Account));
diff --git a/app/javascript/mastodon/containers/card_container.js b/app/javascript/mastodon/containers/card_container.js
new file mode 100644
index 00000000000..11b9f88d4c8
--- /dev/null
+++ b/app/javascript/mastodon/containers/card_container.js
@@ -0,0 +1,18 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import Card from '../features/status/components/card';
+import { fromJS } from 'immutable';
+
+export default class CardContainer extends React.PureComponent {
+
+  static propTypes = {
+    locale: PropTypes.string,
+    card: PropTypes.array.isRequired,
+  };
+
+  render () {
+    const { card, ...props } = this.props;
+    return <Card card={fromJS(card)} {...props} />;
+  }
+
+}
diff --git a/app/javascript/mastodon/containers/compose_container.js b/app/javascript/mastodon/containers/compose_container.js
new file mode 100644
index 00000000000..5ee1d2f141f
--- /dev/null
+++ b/app/javascript/mastodon/containers/compose_container.js
@@ -0,0 +1,38 @@
+import React from 'react';
+import { Provider } from 'react-redux';
+import PropTypes from 'prop-types';
+import configureStore from '../store/configureStore';
+import { hydrateStore } from '../actions/store';
+import { IntlProvider, addLocaleData } from 'react-intl';
+import { getLocale } from '../locales';
+import Compose from '../features/standalone/compose';
+import initialState from '../initial_state';
+
+const { localeData, messages } = getLocale();
+addLocaleData(localeData);
+
+const store = configureStore();
+
+if (initialState) {
+  store.dispatch(hydrateStore(initialState));
+}
+
+export default class TimelineContainer extends React.PureComponent {
+
+  static propTypes = {
+    locale: PropTypes.string.isRequired,
+  };
+
+  render () {
+    const { locale } = this.props;
+
+    return (
+      <IntlProvider locale={locale} messages={messages}>
+        <Provider store={store}>
+          <Compose />
+        </Provider>
+      </IntlProvider>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/containers/dropdown_menu_container.js b/app/javascript/mastodon/containers/dropdown_menu_container.js
new file mode 100644
index 00000000000..151f253908c
--- /dev/null
+++ b/app/javascript/mastodon/containers/dropdown_menu_container.js
@@ -0,0 +1,16 @@
+import { openModal, closeModal } from '../actions/modal';
+import { connect } from 'react-redux';
+import DropdownMenu from '../components/dropdown_menu';
+import { isUserTouching } from '../is_mobile';
+
+const mapStateToProps = state => ({
+  isModalOpen: state.get('modal').modalType === 'ACTIONS',
+});
+
+const mapDispatchToProps = dispatch => ({
+  isUserTouching,
+  onModalOpen: props => dispatch(openModal('ACTIONS', props)),
+  onModalClose: () => dispatch(closeModal()),
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(DropdownMenu);
diff --git a/app/javascript/mastodon/containers/intersection_observer_article_container.js b/app/javascript/mastodon/containers/intersection_observer_article_container.js
new file mode 100644
index 00000000000..b6f162199ad
--- /dev/null
+++ b/app/javascript/mastodon/containers/intersection_observer_article_container.js
@@ -0,0 +1,17 @@
+import { connect } from 'react-redux';
+import IntersectionObserverArticle from '../components/intersection_observer_article';
+import { setHeight } from '../actions/height_cache';
+
+const makeMapStateToProps = (state, props) => ({
+  cachedHeight: state.getIn(['height_cache', props.saveHeightKey, props.id]),
+});
+
+const mapDispatchToProps = (dispatch) => ({
+
+  onHeightChange (key, id, height) {
+    dispatch(setHeight(key, id, height));
+  },
+
+});
+
+export default connect(makeMapStateToProps, mapDispatchToProps)(IntersectionObserverArticle);
diff --git a/app/javascript/mastodon/containers/mastodon.js b/app/javascript/mastodon/containers/mastodon.js
new file mode 100644
index 00000000000..d1710445b53
--- /dev/null
+++ b/app/javascript/mastodon/containers/mastodon.js
@@ -0,0 +1,70 @@
+import React from 'react';
+import { Provider } from 'react-redux';
+import PropTypes from 'prop-types';
+import configureStore from '../store/configureStore';
+import { showOnboardingOnce } from '../actions/onboarding';
+import { BrowserRouter, Route } from 'react-router-dom';
+import { ScrollContext } from 'react-router-scroll-4';
+import UI from '../features/ui';
+import { hydrateStore } from '../actions/store';
+import { connectUserStream } from '../actions/streaming';
+import { IntlProvider, addLocaleData } from 'react-intl';
+import { getLocale } from '../locales';
+import initialState from '../initial_state';
+
+const { localeData, messages } = getLocale();
+addLocaleData(localeData);
+
+export const store = configureStore();
+const hydrateAction = hydrateStore(initialState);
+store.dispatch(hydrateAction);
+
+export default class Mastodon extends React.PureComponent {
+
+  static propTypes = {
+    locale: PropTypes.string.isRequired,
+  };
+
+  componentDidMount() {
+    this.disconnect = store.dispatch(connectUserStream());
+
+    // Desktop notifications
+    // Ask after 1 minute
+    if (typeof window.Notification !== 'undefined' && Notification.permission === 'default') {
+      window.setTimeout(() => Notification.requestPermission(), 60 * 1000);
+    }
+
+    // Protocol handler
+    // Ask after 5 minutes
+    if (typeof navigator.registerProtocolHandler !== 'undefined') {
+      const handlerUrl = window.location.protocol + '//' + window.location.host + '/intent?uri=%s';
+      window.setTimeout(() => navigator.registerProtocolHandler('web+mastodon', handlerUrl, 'Mastodon'), 5 * 60 * 1000);
+    }
+
+    store.dispatch(showOnboardingOnce());
+  }
+
+  componentWillUnmount () {
+    if (this.disconnect) {
+      this.disconnect();
+      this.disconnect = null;
+    }
+  }
+
+  render () {
+    const { locale } = this.props;
+
+    return (
+      <IntlProvider locale={locale} messages={messages}>
+        <Provider store={store}>
+          <BrowserRouter basename='/web'>
+            <ScrollContext>
+              <Route path='/' component={UI} />
+            </ScrollContext>
+          </BrowserRouter>
+        </Provider>
+      </IntlProvider>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/containers/media_gallery_container.js b/app/javascript/mastodon/containers/media_gallery_container.js
new file mode 100644
index 00000000000..812c3d4e50f
--- /dev/null
+++ b/app/javascript/mastodon/containers/media_gallery_container.js
@@ -0,0 +1,34 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { IntlProvider, addLocaleData } from 'react-intl';
+import { getLocale } from '../locales';
+import MediaGallery from '../components/media_gallery';
+import { fromJS } from 'immutable';
+
+const { localeData, messages } = getLocale();
+addLocaleData(localeData);
+
+export default class MediaGalleryContainer extends React.PureComponent {
+
+  static propTypes = {
+    locale: PropTypes.string.isRequired,
+    media: PropTypes.array.isRequired,
+  };
+
+  handleOpenMedia = () => {}
+
+  render () {
+    const { locale, media, ...props } = this.props;
+
+    return (
+      <IntlProvider locale={locale} messages={messages}>
+        <MediaGallery
+          {...props}
+          media={fromJS(media)}
+          onOpenMedia={this.handleOpenMedia}
+        />
+      </IntlProvider>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/containers/status_container.js b/app/javascript/mastodon/containers/status_container.js
new file mode 100644
index 00000000000..b225402041a
--- /dev/null
+++ b/app/javascript/mastodon/containers/status_container.js
@@ -0,0 +1,133 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import Status from '../components/status';
+import { makeGetStatus } from '../selectors';
+import {
+  replyCompose,
+  mentionCompose,
+} from '../actions/compose';
+import {
+  reblog,
+  favourite,
+  unreblog,
+  unfavourite,
+  pin,
+  unpin,
+} from '../actions/interactions';
+import { blockAccount } from '../actions/accounts';
+import { muteStatus, unmuteStatus, deleteStatus } from '../actions/statuses';
+import { initMuteModal } from '../actions/mutes';
+import { initReport } from '../actions/reports';
+import { openModal } from '../actions/modal';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import { boostModal, deleteModal } from '../initial_state';
+
+const messages = defineMessages({
+  deleteConfirm: { id: 'confirmations.delete.confirm', defaultMessage: 'Delete' },
+  deleteMessage: { id: 'confirmations.delete.message', defaultMessage: 'Are you sure you want to delete this status?' },
+  blockConfirm: { id: 'confirmations.block.confirm', defaultMessage: 'Block' },
+});
+
+const makeMapStateToProps = () => {
+  const getStatus = makeGetStatus();
+
+  const mapStateToProps = (state, props) => ({
+    status: getStatus(state, props.id),
+  });
+
+  return mapStateToProps;
+};
+
+const mapDispatchToProps = (dispatch, { intl }) => ({
+
+  onReply (status, router) {
+    dispatch(replyCompose(status, router));
+  },
+
+  onModalReblog (status) {
+    dispatch(reblog(status));
+  },
+
+  onReblog (status, e) {
+    if (status.get('reblogged')) {
+      dispatch(unreblog(status));
+    } else {
+      if (e.shiftKey || !boostModal) {
+        this.onModalReblog(status);
+      } else {
+        dispatch(openModal('BOOST', { status, onReblog: this.onModalReblog }));
+      }
+    }
+  },
+
+  onFavourite (status) {
+    if (status.get('favourited')) {
+      dispatch(unfavourite(status));
+    } else {
+      dispatch(favourite(status));
+    }
+  },
+
+  onPin (status) {
+    if (status.get('pinned')) {
+      dispatch(unpin(status));
+    } else {
+      dispatch(pin(status));
+    }
+  },
+
+  onEmbed (status) {
+    dispatch(openModal('EMBED', { url: status.get('url') }));
+  },
+
+  onDelete (status) {
+    if (!deleteModal) {
+      dispatch(deleteStatus(status.get('id')));
+    } else {
+      dispatch(openModal('CONFIRM', {
+        message: intl.formatMessage(messages.deleteMessage),
+        confirm: intl.formatMessage(messages.deleteConfirm),
+        onConfirm: () => dispatch(deleteStatus(status.get('id'))),
+      }));
+    }
+  },
+
+  onMention (account, router) {
+    dispatch(mentionCompose(account, router));
+  },
+
+  onOpenMedia (media, index) {
+    dispatch(openModal('MEDIA', { media, index }));
+  },
+
+  onOpenVideo (media, time) {
+    dispatch(openModal('VIDEO', { media, time }));
+  },
+
+  onBlock (account) {
+    dispatch(openModal('CONFIRM', {
+      message: <FormattedMessage id='confirmations.block.message' defaultMessage='Are you sure you want to block {name}?' values={{ name: <strong>@{account.get('acct')}</strong> }} />,
+      confirm: intl.formatMessage(messages.blockConfirm),
+      onConfirm: () => dispatch(blockAccount(account.get('id'))),
+    }));
+  },
+
+  onReport (status) {
+    dispatch(initReport(status.get('account'), status));
+  },
+
+  onMute (account) {
+    dispatch(initMuteModal(account));
+  },
+
+  onMuteConversation (status) {
+    if (status.get('muted')) {
+      dispatch(unmuteStatus(status.get('id')));
+    } else {
+      dispatch(muteStatus(status.get('id')));
+    }
+  },
+
+});
+
+export default injectIntl(connect(makeMapStateToProps, mapDispatchToProps)(Status));
diff --git a/app/javascript/mastodon/containers/timeline_container.js b/app/javascript/mastodon/containers/timeline_container.js
new file mode 100644
index 00000000000..e84c921eeb1
--- /dev/null
+++ b/app/javascript/mastodon/containers/timeline_container.js
@@ -0,0 +1,48 @@
+import React from 'react';
+import { Provider } from 'react-redux';
+import PropTypes from 'prop-types';
+import configureStore from '../store/configureStore';
+import { hydrateStore } from '../actions/store';
+import { IntlProvider, addLocaleData } from 'react-intl';
+import { getLocale } from '../locales';
+import PublicTimeline from '../features/standalone/public_timeline';
+import HashtagTimeline from '../features/standalone/hashtag_timeline';
+import initialState from '../initial_state';
+
+const { localeData, messages } = getLocale();
+addLocaleData(localeData);
+
+const store = configureStore();
+
+if (initialState) {
+  store.dispatch(hydrateStore(initialState));
+}
+
+export default class TimelineContainer extends React.PureComponent {
+
+  static propTypes = {
+    locale: PropTypes.string.isRequired,
+    hashtag: PropTypes.string,
+  };
+
+  render () {
+    const { locale, hashtag } = this.props;
+
+    let timeline;
+
+    if (hashtag) {
+      timeline = <HashtagTimeline hashtag={hashtag} />;
+    } else {
+      timeline = <PublicTimeline />;
+    }
+
+    return (
+      <IntlProvider locale={locale} messages={messages}>
+        <Provider store={store}>
+          {timeline}
+        </Provider>
+      </IntlProvider>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/containers/video_container.js b/app/javascript/mastodon/containers/video_container.js
new file mode 100644
index 00000000000..2fd353096d4
--- /dev/null
+++ b/app/javascript/mastodon/containers/video_container.js
@@ -0,0 +1,26 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { IntlProvider, addLocaleData } from 'react-intl';
+import { getLocale } from '../locales';
+import Video from '../features/video';
+
+const { localeData, messages } = getLocale();
+addLocaleData(localeData);
+
+export default class VideoContainer extends React.PureComponent {
+
+  static propTypes = {
+    locale: PropTypes.string.isRequired,
+  };
+
+  render () {
+    const { locale, ...props } = this.props;
+
+    return (
+      <IntlProvider locale={locale} messages={messages}>
+        <Video {...props} />
+      </IntlProvider>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/extra_polyfills.js b/app/javascript/mastodon/extra_polyfills.js
new file mode 100644
index 00000000000..3acc55abd68
--- /dev/null
+++ b/app/javascript/mastodon/extra_polyfills.js
@@ -0,0 +1,5 @@
+import 'intersection-observer';
+import 'requestidlecallback';
+import objectFitImages  from 'object-fit-images';
+
+objectFitImages();
diff --git a/app/javascript/mastodon/features/account/components/action_bar.js b/app/javascript/mastodon/features/account/components/action_bar.js
new file mode 100644
index 00000000000..e375131d4dd
--- /dev/null
+++ b/app/javascript/mastodon/features/account/components/action_bar.js
@@ -0,0 +1,133 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import DropdownMenuContainer from '../../../containers/dropdown_menu_container';
+import { Link } from 'react-router-dom';
+import { defineMessages, injectIntl, FormattedMessage, FormattedNumber } from 'react-intl';
+import { me } from '../../../initial_state';
+
+const messages = defineMessages({
+  mention: { id: 'account.mention', defaultMessage: 'Mention @{name}' },
+  edit_profile: { id: 'account.edit_profile', defaultMessage: 'Edit profile' },
+  unblock: { id: 'account.unblock', defaultMessage: 'Unblock @{name}' },
+  unfollow: { id: 'account.unfollow', defaultMessage: 'Unfollow' },
+  unmute: { id: 'account.unmute', defaultMessage: 'Unmute @{name}' },
+  block: { id: 'account.block', defaultMessage: 'Block @{name}' },
+  mute: { id: 'account.mute', defaultMessage: 'Mute @{name}' },
+  follow: { id: 'account.follow', defaultMessage: 'Follow' },
+  report: { id: 'account.report', defaultMessage: 'Report @{name}' },
+  share: { id: 'account.share', defaultMessage: 'Share @{name}\'s profile' },
+  media: { id: 'account.media', defaultMessage: 'Media' },
+  blockDomain: { id: 'account.block_domain', defaultMessage: 'Hide everything from {domain}' },
+  unblockDomain: { id: 'account.unblock_domain', defaultMessage: 'Unhide {domain}' },
+});
+
+@injectIntl
+export default class ActionBar extends React.PureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map.isRequired,
+    onFollow: PropTypes.func,
+    onBlock: PropTypes.func.isRequired,
+    onMention: PropTypes.func.isRequired,
+    onReport: PropTypes.func.isRequired,
+    onMute: PropTypes.func.isRequired,
+    onBlockDomain: PropTypes.func.isRequired,
+    onUnblockDomain: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  handleShare = () => {
+    navigator.share({
+      url: this.props.account.get('url'),
+    });
+  }
+
+  render () {
+    const { account, intl } = this.props;
+
+    let menu = [];
+    let extraInfo = '';
+
+    menu.push({ text: intl.formatMessage(messages.mention, { name: account.get('username') }), action: this.props.onMention });
+    if ('share' in navigator) {
+      menu.push({ text: intl.formatMessage(messages.share, { name: account.get('username') }), action: this.handleShare });
+    }
+    menu.push(null);
+    menu.push({ text: intl.formatMessage(messages.media), to: `/accounts/${account.get('id')}/media` });
+    menu.push(null);
+
+    if (account.get('id') === me) {
+      menu.push({ text: intl.formatMessage(messages.edit_profile), href: '/settings/profile' });
+    } else {
+      if (account.getIn(['relationship', 'muting'])) {
+        menu.push({ text: intl.formatMessage(messages.unmute, { name: account.get('username') }), action: this.props.onMute });
+      } else {
+        menu.push({ text: intl.formatMessage(messages.mute, { name: account.get('username') }), action: this.props.onMute });
+      }
+
+      if (account.getIn(['relationship', 'blocking'])) {
+        menu.push({ text: intl.formatMessage(messages.unblock, { name: account.get('username') }), action: this.props.onBlock });
+      } else {
+        menu.push({ text: intl.formatMessage(messages.block, { name: account.get('username') }), action: this.props.onBlock });
+      }
+
+      menu.push({ text: intl.formatMessage(messages.report, { name: account.get('username') }), action: this.props.onReport });
+    }
+
+    if (account.get('acct') !== account.get('username')) {
+      const domain = account.get('acct').split('@')[1];
+
+      extraInfo = (
+        <div className='account__disclaimer'>
+          <FormattedMessage
+            id='account.disclaimer_full'
+            defaultMessage="Information below may reflect the user's profile incompletely."
+          />
+          {' '}
+          <a target='_blank' rel='noopener' href={account.get('url')}>
+            <FormattedMessage id='account.view_full_profile' defaultMessage='View full profile' />
+          </a>
+        </div>
+      );
+
+      menu.push(null);
+
+      if (account.getIn(['relationship', 'domain_blocking'])) {
+        menu.push({ text: intl.formatMessage(messages.unblockDomain, { domain }), action: this.props.onUnblockDomain });
+      } else {
+        menu.push({ text: intl.formatMessage(messages.blockDomain, { domain }), action: this.props.onBlockDomain });
+      }
+    }
+
+    return (
+      <div>
+        {extraInfo}
+
+        <div className='account__action-bar'>
+          <div className='account__action-bar-dropdown'>
+            <DropdownMenuContainer items={menu} icon='bars' size={24} direction='right' />
+          </div>
+
+          <div className='account__action-bar-links'>
+            <Link className='account__action-bar__tab' to={`/accounts/${account.get('id')}`}>
+              <span><FormattedMessage id='account.posts' defaultMessage='Posts' /></span>
+              <strong><FormattedNumber value={account.get('statuses_count')} /></strong>
+            </Link>
+
+            <Link className='account__action-bar__tab' to={`/accounts/${account.get('id')}/following`}>
+              <span><FormattedMessage id='account.follows' defaultMessage='Follows' /></span>
+              <strong><FormattedNumber value={account.get('following_count')} /></strong>
+            </Link>
+
+            <Link className='account__action-bar__tab' to={`/accounts/${account.get('id')}/followers`}>
+              <span><FormattedMessage id='account.followers' defaultMessage='Followers' /></span>
+              <strong><FormattedNumber value={account.get('followers_count')} /></strong>
+            </Link>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/account/components/header.js b/app/javascript/mastodon/features/account/components/header.js
new file mode 100644
index 00000000000..f0d2d481fc5
--- /dev/null
+++ b/app/javascript/mastodon/features/account/components/header.js
@@ -0,0 +1,128 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import IconButton from '../../../components/icon_button';
+import Motion from '../../ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { autoPlayGif, me } from '../../../initial_state';
+
+const messages = defineMessages({
+  unfollow: { id: 'account.unfollow', defaultMessage: 'Unfollow' },
+  follow: { id: 'account.follow', defaultMessage: 'Follow' },
+  requested: { id: 'account.requested', defaultMessage: 'Awaiting approval. Click to cancel follow request' },
+});
+
+class Avatar extends ImmutablePureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map.isRequired,
+  };
+
+  state = {
+    isHovered: false,
+  };
+
+  handleMouseOver = () => {
+    if (this.state.isHovered) return;
+    this.setState({ isHovered: true });
+  }
+
+  handleMouseOut = () => {
+    if (!this.state.isHovered) return;
+    this.setState({ isHovered: false });
+  }
+
+  render () {
+    const { account }   = this.props;
+    const { isHovered } = this.state;
+
+    return (
+      <Motion defaultStyle={{ radius: 90 }} style={{ radius: spring(isHovered ? 30 : 90, { stiffness: 180, damping: 12 }) }}>
+        {({ radius }) =>
+          <a
+            href={account.get('url')}
+            className='account__header__avatar'
+            role='presentation'
+            target='_blank'
+            rel='noopener'
+            style={{ borderRadius: `${radius}px`, backgroundImage: `url(${autoPlayGif || isHovered ? account.get('avatar') : account.get('avatar_static')})` }}
+            onMouseOver={this.handleMouseOver}
+            onMouseOut={this.handleMouseOut}
+            onFocus={this.handleMouseOver}
+            onBlur={this.handleMouseOut}
+          >
+            <span style={{ display: 'none' }}>{account.get('acct')}</span>
+          </a>
+        }
+      </Motion>
+    );
+  }
+
+}
+
+@injectIntl
+export default class Header extends ImmutablePureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map,
+    onFollow: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  render () {
+    const { account, intl } = this.props;
+
+    if (!account) {
+      return null;
+    }
+
+    let info        = '';
+    let actionBtn   = '';
+    let lockedIcon  = '';
+
+    if (me !== account.get('id') && account.getIn(['relationship', 'followed_by'])) {
+      info = <span className='account--follows-info'><FormattedMessage id='account.follows_you' defaultMessage='Follows you' /></span>;
+    }
+
+    if (me !== account.get('id')) {
+      if (account.getIn(['relationship', 'requested'])) {
+        actionBtn = (
+          <div className='account--action-button'>
+            <IconButton size={26} active icon='hourglass' title={intl.formatMessage(messages.requested)} onClick={this.props.onFollow} />
+          </div>
+        );
+      } else if (!account.getIn(['relationship', 'blocking'])) {
+        actionBtn = (
+          <div className='account--action-button'>
+            <IconButton size={26} icon={account.getIn(['relationship', 'following']) ? 'user-times' : 'user-plus'} active={account.getIn(['relationship', 'following'])} title={intl.formatMessage(account.getIn(['relationship', 'following']) ? messages.unfollow : messages.follow)} onClick={this.props.onFollow} />
+          </div>
+        );
+      }
+    }
+
+    if (account.get('locked')) {
+      lockedIcon = <i className='fa fa-lock' />;
+    }
+
+    const content         = { __html: account.get('note_emojified') };
+    const displayNameHtml = { __html: account.get('display_name_html') };
+
+    return (
+      <div className='account__header' style={{ backgroundImage: `url(${account.get('header')})` }}>
+        <div>
+          <Avatar account={account} />
+
+          <span className='account__header__display-name' dangerouslySetInnerHTML={displayNameHtml} />
+          <span className='account__header__username'>@{account.get('acct')} {lockedIcon}</span>
+          <div className='account__header__content' dangerouslySetInnerHTML={content} />
+
+          {info}
+          {actionBtn}
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/account_gallery/components/media_item.js b/app/javascript/mastodon/features/account_gallery/components/media_item.js
new file mode 100644
index 00000000000..dda3d4e37ba
--- /dev/null
+++ b/app/javascript/mastodon/features/account_gallery/components/media_item.js
@@ -0,0 +1,39 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import Permalink from '../../../components/permalink';
+
+export default class MediaItem extends ImmutablePureComponent {
+
+  static propTypes = {
+    media: ImmutablePropTypes.map.isRequired,
+  };
+
+  render () {
+    const { media } = this.props;
+    const status = media.get('status');
+
+    let content, style;
+
+    if (media.get('type') === 'gifv') {
+      content = <span className='media-gallery__gifv__label'>GIF</span>;
+    }
+
+    if (!status.get('sensitive')) {
+      style = { backgroundImage: `url(${media.get('preview_url')})` };
+    }
+
+    return (
+      <div className='account-gallery__item'>
+        <Permalink
+          to={`/statuses/${status.get('id')}`}
+          href={status.get('url')}
+          style={style}
+        >
+          {content}
+        </Permalink>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/account_gallery/index.js b/app/javascript/mastodon/features/account_gallery/index.js
new file mode 100644
index 00000000000..a4072241783
--- /dev/null
+++ b/app/javascript/mastodon/features/account_gallery/index.js
@@ -0,0 +1,111 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import { fetchAccount } from '../../actions/accounts';
+import { refreshAccountMediaTimeline, expandAccountMediaTimeline } from '../../actions/timelines';
+import LoadingIndicator from '../../components/loading_indicator';
+import Column from '../ui/components/column';
+import ColumnBackButton from '../../components/column_back_button';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { getAccountGallery } from '../../selectors';
+import MediaItem from './components/media_item';
+import HeaderContainer from '../account_timeline/containers/header_container';
+import { FormattedMessage } from 'react-intl';
+import { ScrollContainer } from 'react-router-scroll-4';
+import LoadMore from '../../components/load_more';
+
+const mapStateToProps = (state, props) => ({
+  medias: getAccountGallery(state, props.params.accountId),
+  isLoading: state.getIn(['timelines', `account:${props.params.accountId}:media`, 'isLoading']),
+  hasMore: !!state.getIn(['timelines', `account:${props.params.accountId}:media`, 'next']),
+});
+
+@connect(mapStateToProps)
+export default class AccountGallery extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    medias: ImmutablePropTypes.list.isRequired,
+    isLoading: PropTypes.bool,
+    hasMore: PropTypes.bool,
+  };
+
+  componentDidMount () {
+    this.props.dispatch(fetchAccount(this.props.params.accountId));
+    this.props.dispatch(refreshAccountMediaTimeline(this.props.params.accountId));
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (nextProps.params.accountId !== this.props.params.accountId && nextProps.params.accountId) {
+      this.props.dispatch(fetchAccount(nextProps.params.accountId));
+      this.props.dispatch(refreshAccountMediaTimeline(this.props.params.accountId));
+    }
+  }
+
+  handleScrollToBottom = () => {
+    if (this.props.hasMore) {
+      this.props.dispatch(expandAccountMediaTimeline(this.props.params.accountId));
+    }
+  }
+
+  handleScroll = (e) => {
+    const { scrollTop, scrollHeight, clientHeight } = e.target;
+    const offset = scrollHeight - scrollTop - clientHeight;
+
+    if (150 > offset && !this.props.isLoading) {
+      this.handleScrollToBottom();
+    }
+  }
+
+  handleLoadMore = (e) => {
+    e.preventDefault();
+    this.handleScrollToBottom();
+  }
+
+  render () {
+    const { medias, isLoading, hasMore } = this.props;
+
+    let loadMore = null;
+
+    if (!medias && isLoading) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    if (!isLoading && medias.size > 0 && hasMore) {
+      loadMore = <LoadMore onClick={this.handleLoadMore} />;
+    }
+
+    return (
+      <Column>
+        <ColumnBackButton />
+
+        <ScrollContainer scrollKey='account_gallery'>
+          <div className='scrollable' onScroll={this.handleScroll}>
+            <HeaderContainer accountId={this.props.params.accountId} />
+
+            <div className='account-section-headline'>
+              <FormattedMessage id='account.media' defaultMessage='Media' />
+            </div>
+
+            <div className='account-gallery__container'>
+              {medias.map(media =>
+                <MediaItem
+                  key={media.get('id')}
+                  media={media}
+                />
+              )}
+              {loadMore}
+            </div>
+          </div>
+        </ScrollContainer>
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/account_timeline/components/header.js b/app/javascript/mastodon/features/account_timeline/components/header.js
new file mode 100644
index 00000000000..8cf7b92ca2a
--- /dev/null
+++ b/app/javascript/mastodon/features/account_timeline/components/header.js
@@ -0,0 +1,89 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import InnerHeader from '../../account/components/header';
+import ActionBar from '../../account/components/action_bar';
+import MissingIndicator from '../../../components/missing_indicator';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+export default class Header extends ImmutablePureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map,
+    onFollow: PropTypes.func.isRequired,
+    onBlock: PropTypes.func.isRequired,
+    onMention: PropTypes.func.isRequired,
+    onReport: PropTypes.func.isRequired,
+    onMute: PropTypes.func.isRequired,
+    onBlockDomain: PropTypes.func.isRequired,
+    onUnblockDomain: PropTypes.func.isRequired,
+  };
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  handleFollow = () => {
+    this.props.onFollow(this.props.account);
+  }
+
+  handleBlock = () => {
+    this.props.onBlock(this.props.account);
+  }
+
+  handleMention = () => {
+    this.props.onMention(this.props.account, this.context.router.history);
+  }
+
+  handleReport = () => {
+    this.props.onReport(this.props.account);
+  }
+
+  handleMute = () => {
+    this.props.onMute(this.props.account);
+  }
+
+  handleBlockDomain = () => {
+    const domain = this.props.account.get('acct').split('@')[1];
+
+    if (!domain) return;
+
+    this.props.onBlockDomain(domain, this.props.account.get('id'));
+  }
+
+  handleUnblockDomain = () => {
+    const domain = this.props.account.get('acct').split('@')[1];
+
+    if (!domain) return;
+
+    this.props.onUnblockDomain(domain, this.props.account.get('id'));
+  }
+
+  render () {
+    const { account } = this.props;
+
+    if (account === null) {
+      return <MissingIndicator />;
+    }
+
+    return (
+      <div className='account-timeline__header'>
+        <InnerHeader
+          account={account}
+          onFollow={this.handleFollow}
+        />
+
+        <ActionBar
+          account={account}
+          onBlock={this.handleBlock}
+          onMention={this.handleMention}
+          onReport={this.handleReport}
+          onMute={this.handleMute}
+          onBlockDomain={this.handleBlockDomain}
+          onUnblockDomain={this.handleUnblockDomain}
+        />
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/account_timeline/containers/header_container.js b/app/javascript/mastodon/features/account_timeline/containers/header_container.js
new file mode 100644
index 00000000000..8e50ec405cc
--- /dev/null
+++ b/app/javascript/mastodon/features/account_timeline/containers/header_container.js
@@ -0,0 +1,96 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import { makeGetAccount } from '../../../selectors';
+import Header from '../components/header';
+import {
+  followAccount,
+  unfollowAccount,
+  blockAccount,
+  unblockAccount,
+  unmuteAccount,
+} from '../../../actions/accounts';
+import { mentionCompose } from '../../../actions/compose';
+import { initMuteModal } from '../../../actions/mutes';
+import { initReport } from '../../../actions/reports';
+import { openModal } from '../../../actions/modal';
+import { blockDomain, unblockDomain } from '../../../actions/domain_blocks';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import { unfollowModal } from '../../../initial_state';
+
+const messages = defineMessages({
+  unfollowConfirm: { id: 'confirmations.unfollow.confirm', defaultMessage: 'Unfollow' },
+  blockConfirm: { id: 'confirmations.block.confirm', defaultMessage: 'Block' },
+  blockDomainConfirm: { id: 'confirmations.domain_block.confirm', defaultMessage: 'Hide entire domain' },
+});
+
+const makeMapStateToProps = () => {
+  const getAccount = makeGetAccount();
+
+  const mapStateToProps = (state, { accountId }) => ({
+    account: getAccount(state, accountId),
+  });
+
+  return mapStateToProps;
+};
+
+const mapDispatchToProps = (dispatch, { intl }) => ({
+
+  onFollow (account) {
+    if (account.getIn(['relationship', 'following']) || account.getIn(['relationship', 'requested'])) {
+      if (unfollowModal) {
+        dispatch(openModal('CONFIRM', {
+          message: <FormattedMessage id='confirmations.unfollow.message' defaultMessage='Are you sure you want to unfollow {name}?' values={{ name: <strong>@{account.get('acct')}</strong> }} />,
+          confirm: intl.formatMessage(messages.unfollowConfirm),
+          onConfirm: () => dispatch(unfollowAccount(account.get('id'))),
+        }));
+      } else {
+        dispatch(unfollowAccount(account.get('id')));
+      }
+    } else {
+      dispatch(followAccount(account.get('id')));
+    }
+  },
+
+  onBlock (account) {
+    if (account.getIn(['relationship', 'blocking'])) {
+      dispatch(unblockAccount(account.get('id')));
+    } else {
+      dispatch(openModal('CONFIRM', {
+        message: <FormattedMessage id='confirmations.block.message' defaultMessage='Are you sure you want to block {name}?' values={{ name: <strong>@{account.get('acct')}</strong> }} />,
+        confirm: intl.formatMessage(messages.blockConfirm),
+        onConfirm: () => dispatch(blockAccount(account.get('id'))),
+      }));
+    }
+  },
+
+  onMention (account, router) {
+    dispatch(mentionCompose(account, router));
+  },
+
+  onReport (account) {
+    dispatch(initReport(account));
+  },
+
+  onMute (account) {
+    if (account.getIn(['relationship', 'muting'])) {
+      dispatch(unmuteAccount(account.get('id')));
+    } else {
+      dispatch(initMuteModal(account));
+    }
+  },
+
+  onBlockDomain (domain, accountId) {
+    dispatch(openModal('CONFIRM', {
+      message: <FormattedMessage id='confirmations.domain_block.message' defaultMessage='Are you really, really sure you want to block the entire {domain}? In most cases a few targeted blocks or mutes are sufficient and preferable.' values={{ domain: <strong>{domain}</strong> }} />,
+      confirm: intl.formatMessage(messages.blockDomainConfirm),
+      onConfirm: () => dispatch(blockDomain(domain, accountId)),
+    }));
+  },
+
+  onUnblockDomain (domain, accountId) {
+    dispatch(unblockDomain(domain, accountId));
+  },
+
+});
+
+export default injectIntl(connect(makeMapStateToProps, mapDispatchToProps)(Header));
diff --git a/app/javascript/mastodon/features/account_timeline/index.js b/app/javascript/mastodon/features/account_timeline/index.js
new file mode 100644
index 00000000000..f8c85c296d9
--- /dev/null
+++ b/app/javascript/mastodon/features/account_timeline/index.js
@@ -0,0 +1,77 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import { fetchAccount } from '../../actions/accounts';
+import { refreshAccountTimeline, expandAccountTimeline } from '../../actions/timelines';
+import StatusList from '../../components/status_list';
+import LoadingIndicator from '../../components/loading_indicator';
+import Column from '../ui/components/column';
+import HeaderContainer from './containers/header_container';
+import ColumnBackButton from '../../components/column_back_button';
+import { List as ImmutableList } from 'immutable';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const mapStateToProps = (state, props) => ({
+  statusIds: state.getIn(['timelines', `account:${props.params.accountId}`, 'items'], ImmutableList()),
+  isLoading: state.getIn(['timelines', `account:${props.params.accountId}`, 'isLoading']),
+  hasMore: !!state.getIn(['timelines', `account:${props.params.accountId}`, 'next']),
+});
+
+@connect(mapStateToProps)
+export default class AccountTimeline extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    statusIds: ImmutablePropTypes.list,
+    isLoading: PropTypes.bool,
+    hasMore: PropTypes.bool,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchAccount(this.props.params.accountId));
+    this.props.dispatch(refreshAccountTimeline(this.props.params.accountId));
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (nextProps.params.accountId !== this.props.params.accountId && nextProps.params.accountId) {
+      this.props.dispatch(fetchAccount(nextProps.params.accountId));
+      this.props.dispatch(refreshAccountTimeline(nextProps.params.accountId));
+    }
+  }
+
+  handleScrollToBottom = () => {
+    if (!this.props.isLoading && this.props.hasMore) {
+      this.props.dispatch(expandAccountTimeline(this.props.params.accountId));
+    }
+  }
+
+  render () {
+    const { statusIds, isLoading, hasMore } = this.props;
+
+    if (!statusIds && isLoading) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    return (
+      <Column>
+        <ColumnBackButton />
+
+        <StatusList
+          prepend={<HeaderContainer accountId={this.props.params.accountId} />}
+          scrollKey='account_timeline'
+          statusIds={statusIds}
+          isLoading={isLoading}
+          hasMore={hasMore}
+          onScrollToBottom={this.handleScrollToBottom}
+        />
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/blocks/index.js b/app/javascript/mastodon/features/blocks/index.js
new file mode 100644
index 00000000000..14a512ae8cf
--- /dev/null
+++ b/app/javascript/mastodon/features/blocks/index.js
@@ -0,0 +1,70 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import LoadingIndicator from '../../components/loading_indicator';
+import { ScrollContainer } from 'react-router-scroll-4';
+import Column from '../ui/components/column';
+import ColumnBackButtonSlim from '../../components/column_back_button_slim';
+import AccountContainer from '../../containers/account_container';
+import { fetchBlocks, expandBlocks } from '../../actions/blocks';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const messages = defineMessages({
+  heading: { id: 'column.blocks', defaultMessage: 'Blocked users' },
+});
+
+const mapStateToProps = state => ({
+  accountIds: state.getIn(['user_lists', 'blocks', 'items']),
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class Blocks extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    accountIds: ImmutablePropTypes.list,
+    intl: PropTypes.object.isRequired,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchBlocks());
+  }
+
+  handleScroll = (e) => {
+    const { scrollTop, scrollHeight, clientHeight } = e.target;
+
+    if (scrollTop === scrollHeight - clientHeight) {
+      this.props.dispatch(expandBlocks());
+    }
+  }
+
+  render () {
+    const { intl, accountIds } = this.props;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    return (
+      <Column icon='ban' heading={intl.formatMessage(messages.heading)}>
+        <ColumnBackButtonSlim />
+        <ScrollContainer scrollKey='blocks'>
+          <div className='scrollable' onScroll={this.handleScroll}>
+            {accountIds.map(id =>
+              <AccountContainer key={id} id={id} />
+            )}
+          </div>
+        </ScrollContainer>
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/community_timeline/components/column_settings.js b/app/javascript/mastodon/features/community_timeline/components/column_settings.js
new file mode 100644
index 00000000000..a992b27bbdb
--- /dev/null
+++ b/app/javascript/mastodon/features/community_timeline/components/column_settings.js
@@ -0,0 +1,35 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import SettingText from '../../../components/setting_text';
+
+const messages = defineMessages({
+  filter_regex: { id: 'home.column_settings.filter_regex', defaultMessage: 'Filter out by regular expressions' },
+  settings: { id: 'home.settings', defaultMessage: 'Column settings' },
+});
+
+@injectIntl
+export default class ColumnSettings extends React.PureComponent {
+
+  static propTypes = {
+    settings: ImmutablePropTypes.map.isRequired,
+    onChange: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  render () {
+    const { settings, onChange, intl } = this.props;
+
+    return (
+      <div>
+        <span className='column-settings__section'><FormattedMessage id='home.column_settings.advanced' defaultMessage='Advanced' /></span>
+
+        <div className='column-settings__row'>
+          <SettingText settings={settings} settingKey={['regex', 'body']} onChange={onChange} label={intl.formatMessage(messages.filter_regex)} />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/community_timeline/containers/column_settings_container.js b/app/javascript/mastodon/features/community_timeline/containers/column_settings_container.js
new file mode 100644
index 00000000000..f3489b4095b
--- /dev/null
+++ b/app/javascript/mastodon/features/community_timeline/containers/column_settings_container.js
@@ -0,0 +1,17 @@
+import { connect } from 'react-redux';
+import ColumnSettings from '../components/column_settings';
+import { changeSetting } from '../../../actions/settings';
+
+const mapStateToProps = state => ({
+  settings: state.getIn(['settings', 'community']),
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onChange (key, checked) {
+    dispatch(changeSetting(['community', ...key], checked));
+  },
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(ColumnSettings);
diff --git a/app/javascript/mastodon/features/community_timeline/index.js b/app/javascript/mastodon/features/community_timeline/index.js
new file mode 100644
index 00000000000..596a89412db
--- /dev/null
+++ b/app/javascript/mastodon/features/community_timeline/index.js
@@ -0,0 +1,107 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import StatusListContainer from '../ui/containers/status_list_container';
+import Column from '../../components/column';
+import ColumnHeader from '../../components/column_header';
+import {
+  refreshCommunityTimeline,
+  expandCommunityTimeline,
+} from '../../actions/timelines';
+import { addColumn, removeColumn, moveColumn } from '../../actions/columns';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import ColumnSettingsContainer from './containers/column_settings_container';
+import { connectCommunityStream } from '../../actions/streaming';
+
+const messages = defineMessages({
+  title: { id: 'column.community', defaultMessage: 'Local timeline' },
+});
+
+const mapStateToProps = state => ({
+  hasUnread: state.getIn(['timelines', 'community', 'unread']) > 0,
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class CommunityTimeline extends React.PureComponent {
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    columnId: PropTypes.string,
+    intl: PropTypes.object.isRequired,
+    hasUnread: PropTypes.bool,
+    multiColumn: PropTypes.bool,
+  };
+
+  handlePin = () => {
+    const { columnId, dispatch } = this.props;
+
+    if (columnId) {
+      dispatch(removeColumn(columnId));
+    } else {
+      dispatch(addColumn('COMMUNITY', {}));
+    }
+  }
+
+  handleMove = (dir) => {
+    const { columnId, dispatch } = this.props;
+    dispatch(moveColumn(columnId, dir));
+  }
+
+  handleHeaderClick = () => {
+    this.column.scrollTop();
+  }
+
+  componentDidMount () {
+    const { dispatch } = this.props;
+
+    dispatch(refreshCommunityTimeline());
+    this.disconnect = dispatch(connectCommunityStream());
+  }
+
+  componentWillUnmount () {
+    if (this.disconnect) {
+      this.disconnect();
+      this.disconnect = null;
+    }
+  }
+
+  setRef = c => {
+    this.column = c;
+  }
+
+  handleLoadMore = () => {
+    this.props.dispatch(expandCommunityTimeline());
+  }
+
+  render () {
+    const { intl, hasUnread, columnId, multiColumn } = this.props;
+    const pinned = !!columnId;
+
+    return (
+      <Column ref={this.setRef}>
+        <ColumnHeader
+          icon='users'
+          active={hasUnread}
+          title={intl.formatMessage(messages.title)}
+          onPin={this.handlePin}
+          onMove={this.handleMove}
+          onClick={this.handleHeaderClick}
+          pinned={pinned}
+          multiColumn={multiColumn}
+        >
+          <ColumnSettingsContainer />
+        </ColumnHeader>
+
+        <StatusListContainer
+          trackScroll={!pinned}
+          scrollKey={`community_timeline-${columnId}`}
+          timelineId='community'
+          loadMore={this.handleLoadMore}
+          emptyMessage={<FormattedMessage id='empty_column.community' defaultMessage='The local timeline is empty. Write something publicly to get the ball rolling!' />}
+        />
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/autosuggest_account.js b/app/javascript/mastodon/features/compose/components/autosuggest_account.js
new file mode 100644
index 00000000000..e7de3716ba3
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/autosuggest_account.js
@@ -0,0 +1,24 @@
+import React from 'react';
+import Avatar from '../../../components/avatar';
+import DisplayName from '../../../components/display_name';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+export default class AutosuggestAccount extends ImmutablePureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map.isRequired,
+  };
+
+  render () {
+    const { account } = this.props;
+
+    return (
+      <div className='autosuggest-account'>
+        <div className='autosuggest-account-icon'><Avatar account={account} size={18} /></div>
+        <DisplayName account={account} />
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/character_counter.js b/app/javascript/mastodon/features/compose/components/character_counter.js
new file mode 100644
index 00000000000..0ecfc9141d8
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/character_counter.js
@@ -0,0 +1,25 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { length } from 'stringz';
+
+export default class CharacterCounter extends React.PureComponent {
+
+  static propTypes = {
+    text: PropTypes.string.isRequired,
+    max: PropTypes.number.isRequired,
+  };
+
+  checkRemainingText (diff) {
+    if (diff < 0) {
+      return <span className='character-counter character-counter--over'>{diff}</span>;
+    }
+
+    return <span className='character-counter'>{diff}</span>;
+  }
+
+  render () {
+    const diff = this.props.max - length(this.props.text);
+    return this.checkRemainingText(diff);
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/compose_form.js b/app/javascript/mastodon/features/compose/components/compose_form.js
new file mode 100644
index 00000000000..7890755f33d
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/compose_form.js
@@ -0,0 +1,212 @@
+import React from 'react';
+import CharacterCounter from './character_counter';
+import Button from '../../../components/button';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import ReplyIndicatorContainer from '../containers/reply_indicator_container';
+import AutosuggestTextarea from '../../../components/autosuggest_textarea';
+import UploadButtonContainer from '../containers/upload_button_container';
+import { defineMessages, injectIntl } from 'react-intl';
+import Collapsable from '../../../components/collapsable';
+import SpoilerButtonContainer from '../containers/spoiler_button_container';
+import PrivacyDropdownContainer from '../containers/privacy_dropdown_container';
+import SensitiveButtonContainer from '../containers/sensitive_button_container';
+import EmojiPickerDropdown from '../containers/emoji_picker_dropdown_container';
+import UploadFormContainer from '../containers/upload_form_container';
+import WarningContainer from '../containers/warning_container';
+import { isMobile } from '../../../is_mobile';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { length } from 'stringz';
+import { countableText } from '../util/counter';
+
+const messages = defineMessages({
+  placeholder: { id: 'compose_form.placeholder', defaultMessage: 'What is on your mind?' },
+  spoiler_placeholder: { id: 'compose_form.spoiler_placeholder', defaultMessage: 'Write your warning here' },
+  publish: { id: 'compose_form.publish', defaultMessage: 'Toot' },
+  publishLoud: { id: 'compose_form.publish_loud', defaultMessage: '{publish}!' },
+});
+
+@injectIntl
+export default class ComposeForm extends ImmutablePureComponent {
+
+  static propTypes = {
+    intl: PropTypes.object.isRequired,
+    text: PropTypes.string.isRequired,
+    suggestion_token: PropTypes.string,
+    suggestions: ImmutablePropTypes.list,
+    spoiler: PropTypes.bool,
+    privacy: PropTypes.string,
+    spoiler_text: PropTypes.string,
+    focusDate: PropTypes.instanceOf(Date),
+    preselectDate: PropTypes.instanceOf(Date),
+    is_submitting: PropTypes.bool,
+    is_uploading: PropTypes.bool,
+    onChange: PropTypes.func.isRequired,
+    onSubmit: PropTypes.func.isRequired,
+    onClearSuggestions: PropTypes.func.isRequired,
+    onFetchSuggestions: PropTypes.func.isRequired,
+    onSuggestionSelected: PropTypes.func.isRequired,
+    onChangeSpoilerText: PropTypes.func.isRequired,
+    onPaste: PropTypes.func.isRequired,
+    onPickEmoji: PropTypes.func.isRequired,
+    showSearch: PropTypes.bool,
+  };
+
+  static defaultProps = {
+    showSearch: false,
+  };
+
+  handleChange = (e) => {
+    this.props.onChange(e.target.value);
+  }
+
+  handleKeyDown = (e) => {
+    if (e.keyCode === 13 && (e.ctrlKey || e.metaKey)) {
+      this.handleSubmit();
+    }
+  }
+
+  handleSubmit = () => {
+    if (this.props.text !== this.autosuggestTextarea.textarea.value) {
+      // Something changed the text inside the textarea (e.g. browser extensions like Grammarly)
+      // Update the state to match the current text
+      this.props.onChange(this.autosuggestTextarea.textarea.value);
+    }
+
+    this.props.onSubmit();
+  }
+
+  onSuggestionsClearRequested = () => {
+    this.props.onClearSuggestions();
+  }
+
+  onSuggestionsFetchRequested = (token) => {
+    this.props.onFetchSuggestions(token);
+  }
+
+  onSuggestionSelected = (tokenStart, token, value) => {
+    this._restoreCaret = null;
+    this.props.onSuggestionSelected(tokenStart, token, value);
+  }
+
+  handleChangeSpoilerText = (e) => {
+    this.props.onChangeSpoilerText(e.target.value);
+  }
+
+  componentWillReceiveProps (nextProps) {
+    // If this is the update where we've finished uploading,
+    // save the last caret position so we can restore it below!
+    if (!nextProps.is_uploading && this.props.is_uploading) {
+      this._restoreCaret = this.autosuggestTextarea.textarea.selectionStart;
+    }
+  }
+
+  componentDidUpdate (prevProps) {
+    // This statement does several things:
+    // - If we're beginning a reply, and,
+    //     - Replying to zero or one users, places the cursor at the end of the textbox.
+    //     - Replying to more than one user, selects any usernames past the first;
+    //       this provides a convenient shortcut to drop everyone else from the conversation.
+    // - If we've just finished uploading an image, and have a saved caret position,
+    //   restores the cursor to that position after the text changes!
+    if (this.props.focusDate !== prevProps.focusDate || (prevProps.is_uploading && !this.props.is_uploading && typeof this._restoreCaret === 'number')) {
+      let selectionEnd, selectionStart;
+
+      if (this.props.preselectDate !== prevProps.preselectDate) {
+        selectionEnd   = this.props.text.length;
+        selectionStart = this.props.text.search(/\s/) + 1;
+      } else if (typeof this._restoreCaret === 'number') {
+        selectionStart = this._restoreCaret;
+        selectionEnd   = this._restoreCaret;
+      } else {
+        selectionEnd   = this.props.text.length;
+        selectionStart = selectionEnd;
+      }
+
+      this.autosuggestTextarea.textarea.setSelectionRange(selectionStart, selectionEnd);
+      this.autosuggestTextarea.textarea.focus();
+    } else if(prevProps.is_submitting && !this.props.is_submitting) {
+      this.autosuggestTextarea.textarea.focus();
+    }
+  }
+
+  setAutosuggestTextarea = (c) => {
+    this.autosuggestTextarea = c;
+  }
+
+  handleEmojiPick = (data) => {
+    const position     = this.autosuggestTextarea.textarea.selectionStart;
+    const emojiChar    = data.native;
+    this._restoreCaret = position + emojiChar.length + 1;
+    this.props.onPickEmoji(position, data);
+  }
+
+  render () {
+    const { intl, onPaste, showSearch } = this.props;
+    const disabled = this.props.is_submitting;
+    const text     = [this.props.spoiler_text, countableText(this.props.text)].join('');
+
+    let publishText = '';
+
+    if (this.props.privacy === 'private' || this.props.privacy === 'direct') {
+      publishText = <span className='compose-form__publish-private'><i className='fa fa-lock' /> {intl.formatMessage(messages.publish)}</span>;
+    } else {
+      publishText = this.props.privacy !== 'unlisted' ? intl.formatMessage(messages.publishLoud, { publish: intl.formatMessage(messages.publish) }) : intl.formatMessage(messages.publish);
+    }
+
+    return (
+      <div className='compose-form'>
+        <Collapsable isVisible={this.props.spoiler} fullHeight={50}>
+          <div className='spoiler-input'>
+            <label>
+              <span style={{ display: 'none' }}>{intl.formatMessage(messages.spoiler_placeholder)}</span>
+              <input placeholder={intl.formatMessage(messages.spoiler_placeholder)} value={this.props.spoiler_text} onChange={this.handleChangeSpoilerText} onKeyDown={this.handleKeyDown} type='text' className='spoiler-input__input'  id='cw-spoiler-input' />
+            </label>
+          </div>
+        </Collapsable>
+
+        <WarningContainer />
+
+        <ReplyIndicatorContainer />
+
+        <div className='compose-form__autosuggest-wrapper'>
+          <AutosuggestTextarea
+            ref={this.setAutosuggestTextarea}
+            placeholder={intl.formatMessage(messages.placeholder)}
+            disabled={disabled}
+            value={this.props.text}
+            onChange={this.handleChange}
+            suggestions={this.props.suggestions}
+            onKeyDown={this.handleKeyDown}
+            onSuggestionsFetchRequested={this.onSuggestionsFetchRequested}
+            onSuggestionsClearRequested={this.onSuggestionsClearRequested}
+            onSuggestionSelected={this.onSuggestionSelected}
+            onPaste={onPaste}
+            autoFocus={!showSearch && !isMobile(window.innerWidth)}
+          />
+
+          <EmojiPickerDropdown onPickEmoji={this.handleEmojiPick} />
+        </div>
+
+        <div className='compose-form__modifiers'>
+          <UploadFormContainer />
+        </div>
+
+        <div className='compose-form__buttons-wrapper'>
+          <div className='compose-form__buttons'>
+            <UploadButtonContainer />
+            <PrivacyDropdownContainer />
+            <SensitiveButtonContainer />
+            <SpoilerButtonContainer />
+          </div>
+
+          <div className='compose-form__publish'>
+            <div className='character-counter__wrapper'><CharacterCounter max={500} text={text} /></div>
+            <div className='compose-form__publish-button-wrapper'><Button text={publishText} onClick={this.handleSubmit} disabled={disabled || this.props.is_uploading || length(text) > 500 || (text.length !== 0 && text.trim().length === 0)} block /></div>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/emoji_picker_dropdown.js b/app/javascript/mastodon/features/compose/components/emoji_picker_dropdown.js
new file mode 100644
index 00000000000..dc8fc02ba49
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/emoji_picker_dropdown.js
@@ -0,0 +1,376 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl } from 'react-intl';
+import { EmojiPicker as EmojiPickerAsync } from '../../ui/util/async-components';
+import Overlay from 'react-overlays/lib/Overlay';
+import classNames from 'classnames';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import detectPassiveEvents from 'detect-passive-events';
+import { buildCustomEmojis } from '../../emoji/emoji';
+
+const messages = defineMessages({
+  emoji: { id: 'emoji_button.label', defaultMessage: 'Insert emoji' },
+  emoji_search: { id: 'emoji_button.search', defaultMessage: 'Search...' },
+  emoji_not_found: { id: 'emoji_button.not_found', defaultMessage: 'No emojos!! (╯°□°）╯︵ ┻━┻' },
+  custom: { id: 'emoji_button.custom', defaultMessage: 'Custom' },
+  recent: { id: 'emoji_button.recent', defaultMessage: 'Frequently used' },
+  search_results: { id: 'emoji_button.search_results', defaultMessage: 'Search results' },
+  people: { id: 'emoji_button.people', defaultMessage: 'People' },
+  nature: { id: 'emoji_button.nature', defaultMessage: 'Nature' },
+  food: { id: 'emoji_button.food', defaultMessage: 'Food & Drink' },
+  activity: { id: 'emoji_button.activity', defaultMessage: 'Activity' },
+  travel: { id: 'emoji_button.travel', defaultMessage: 'Travel & Places' },
+  objects: { id: 'emoji_button.objects', defaultMessage: 'Objects' },
+  symbols: { id: 'emoji_button.symbols', defaultMessage: 'Symbols' },
+  flags: { id: 'emoji_button.flags', defaultMessage: 'Flags' },
+});
+
+const assetHost = process.env.CDN_HOST || '';
+let EmojiPicker, Emoji; // load asynchronously
+
+const backgroundImageFn = () => `${assetHost}/emoji/sheet.png`;
+const listenerOptions = detectPassiveEvents.hasSupport ? { passive: true } : false;
+
+const categoriesSort = [
+  'recent',
+  'custom',
+  'people',
+  'nature',
+  'foods',
+  'activity',
+  'places',
+  'objects',
+  'symbols',
+  'flags',
+];
+
+class ModifierPickerMenu extends React.PureComponent {
+
+  static propTypes = {
+    active: PropTypes.bool,
+    onSelect: PropTypes.func.isRequired,
+    onClose: PropTypes.func.isRequired,
+  };
+
+  handleClick = e => {
+    this.props.onSelect(e.currentTarget.getAttribute('data-index') * 1);
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (nextProps.active) {
+      this.attachListeners();
+    } else {
+      this.removeListeners();
+    }
+  }
+
+  componentWillUnmount () {
+    this.removeListeners();
+  }
+
+  handleDocumentClick = e => {
+    if (this.node && !this.node.contains(e.target)) {
+      this.props.onClose();
+    }
+  }
+
+  attachListeners () {
+    document.addEventListener('click', this.handleDocumentClick, false);
+    document.addEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  removeListeners () {
+    document.removeEventListener('click', this.handleDocumentClick, false);
+    document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  render () {
+    const { active } = this.props;
+
+    return (
+      <div className='emoji-picker-dropdown__modifiers__menu' style={{ display: active ? 'block' : 'none' }} ref={this.setRef}>
+        <button onClick={this.handleClick} data-index={1}><Emoji emoji='fist' set='twitter' size={22} sheetSize={32} skin={1} backgroundImageFn={backgroundImageFn} /></button>
+        <button onClick={this.handleClick} data-index={2}><Emoji emoji='fist' set='twitter' size={22} sheetSize={32} skin={2} backgroundImageFn={backgroundImageFn} /></button>
+        <button onClick={this.handleClick} data-index={3}><Emoji emoji='fist' set='twitter' size={22} sheetSize={32} skin={3} backgroundImageFn={backgroundImageFn} /></button>
+        <button onClick={this.handleClick} data-index={4}><Emoji emoji='fist' set='twitter' size={22} sheetSize={32} skin={4} backgroundImageFn={backgroundImageFn} /></button>
+        <button onClick={this.handleClick} data-index={5}><Emoji emoji='fist' set='twitter' size={22} sheetSize={32} skin={5} backgroundImageFn={backgroundImageFn} /></button>
+        <button onClick={this.handleClick} data-index={6}><Emoji emoji='fist' set='twitter' size={22} sheetSize={32} skin={6} backgroundImageFn={backgroundImageFn} /></button>
+      </div>
+    );
+  }
+
+}
+
+class ModifierPicker extends React.PureComponent {
+
+  static propTypes = {
+    active: PropTypes.bool,
+    modifier: PropTypes.number,
+    onChange: PropTypes.func,
+    onClose: PropTypes.func,
+    onOpen: PropTypes.func,
+  };
+
+  handleClick = () => {
+    if (this.props.active) {
+      this.props.onClose();
+    } else {
+      this.props.onOpen();
+    }
+  }
+
+  handleSelect = modifier => {
+    this.props.onChange(modifier);
+    this.props.onClose();
+  }
+
+  render () {
+    const { active, modifier } = this.props;
+
+    return (
+      <div className='emoji-picker-dropdown__modifiers'>
+        <Emoji emoji='fist' set='twitter' size={22} sheetSize={32} skin={modifier} onClick={this.handleClick} backgroundImageFn={backgroundImageFn} />
+        <ModifierPickerMenu active={active} onSelect={this.handleSelect} onClose={this.props.onClose} />
+      </div>
+    );
+  }
+
+}
+
+@injectIntl
+class EmojiPickerMenu extends React.PureComponent {
+
+  static propTypes = {
+    custom_emojis: ImmutablePropTypes.list,
+    frequentlyUsedEmojis: PropTypes.arrayOf(PropTypes.string),
+    loading: PropTypes.bool,
+    onClose: PropTypes.func.isRequired,
+    onPick: PropTypes.func.isRequired,
+    style: PropTypes.object,
+    placement: PropTypes.string,
+    arrowOffsetLeft: PropTypes.string,
+    arrowOffsetTop: PropTypes.string,
+    intl: PropTypes.object.isRequired,
+    skinTone: PropTypes.number.isRequired,
+    onSkinTone: PropTypes.func.isRequired,
+  };
+
+  static defaultProps = {
+    style: {},
+    loading: true,
+    placement: 'bottom',
+    frequentlyUsedEmojis: [],
+  };
+
+  state = {
+    modifierOpen: false,
+  };
+
+  handleDocumentClick = e => {
+    if (this.node && !this.node.contains(e.target)) {
+      this.props.onClose();
+    }
+  }
+
+  componentDidMount () {
+    document.addEventListener('click', this.handleDocumentClick, false);
+    document.addEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  componentWillUnmount () {
+    document.removeEventListener('click', this.handleDocumentClick, false);
+    document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  getI18n = () => {
+    const { intl } = this.props;
+
+    return {
+      search: intl.formatMessage(messages.emoji_search),
+      notfound: intl.formatMessage(messages.emoji_not_found),
+      categories: {
+        search: intl.formatMessage(messages.search_results),
+        recent: intl.formatMessage(messages.recent),
+        people: intl.formatMessage(messages.people),
+        nature: intl.formatMessage(messages.nature),
+        foods: intl.formatMessage(messages.food),
+        activity: intl.formatMessage(messages.activity),
+        places: intl.formatMessage(messages.travel),
+        objects: intl.formatMessage(messages.objects),
+        symbols: intl.formatMessage(messages.symbols),
+        flags: intl.formatMessage(messages.flags),
+        custom: intl.formatMessage(messages.custom),
+      },
+    };
+  }
+
+  handleClick = emoji => {
+    if (!emoji.native) {
+      emoji.native = emoji.colons;
+    }
+
+    this.props.onClose();
+    this.props.onPick(emoji);
+  }
+
+  handleModifierOpen = () => {
+    this.setState({ modifierOpen: true });
+  }
+
+  handleModifierClose = () => {
+    this.setState({ modifierOpen: false });
+  }
+
+  handleModifierChange = modifier => {
+    this.props.onSkinTone(modifier);
+  }
+
+  render () {
+    const { loading, style, intl, custom_emojis, skinTone, frequentlyUsedEmojis } = this.props;
+
+    if (loading) {
+      return <div style={{ width: 299 }} />;
+    }
+
+    const title = intl.formatMessage(messages.emoji);
+    const { modifierOpen } = this.state;
+
+    return (
+      <div className={classNames('emoji-picker-dropdown__menu', { selecting: modifierOpen })} style={style} ref={this.setRef}>
+        <EmojiPicker
+          perLine={8}
+          emojiSize={22}
+          sheetSize={32}
+          custom={buildCustomEmojis(custom_emojis)}
+          color=''
+          emoji=''
+          set='twitter'
+          title={title}
+          i18n={this.getI18n()}
+          onClick={this.handleClick}
+          include={categoriesSort}
+          recent={frequentlyUsedEmojis}
+          skin={skinTone}
+          showPreview={false}
+          backgroundImageFn={backgroundImageFn}
+          emojiTooltip
+        />
+
+        <ModifierPicker
+          active={modifierOpen}
+          modifier={skinTone}
+          onOpen={this.handleModifierOpen}
+          onClose={this.handleModifierClose}
+          onChange={this.handleModifierChange}
+        />
+      </div>
+    );
+  }
+
+}
+
+@injectIntl
+export default class EmojiPickerDropdown extends React.PureComponent {
+
+  static propTypes = {
+    custom_emojis: ImmutablePropTypes.list,
+    frequentlyUsedEmojis: PropTypes.arrayOf(PropTypes.string),
+    intl: PropTypes.object.isRequired,
+    onPickEmoji: PropTypes.func.isRequired,
+    onSkinTone: PropTypes.func.isRequired,
+    skinTone: PropTypes.number.isRequired,
+  };
+
+  state = {
+    active: false,
+    loading: false,
+  };
+
+  setRef = (c) => {
+    this.dropdown = c;
+  }
+
+  onShowDropdown = () => {
+    this.setState({ active: true });
+
+    if (!EmojiPicker) {
+      this.setState({ loading: true });
+
+      EmojiPickerAsync().then(EmojiMart => {
+        EmojiPicker = EmojiMart.Picker;
+        Emoji       = EmojiMart.Emoji;
+
+        this.setState({ loading: false });
+      }).catch(() => {
+        this.setState({ loading: false });
+      });
+    }
+  }
+
+  onHideDropdown = () => {
+    this.setState({ active: false });
+  }
+
+  onToggle = (e) => {
+    if (!this.state.loading && (!e.key || e.key === 'Enter')) {
+      if (this.state.active) {
+        this.onHideDropdown();
+      } else {
+        this.onShowDropdown();
+      }
+    }
+  }
+
+  handleKeyDown = e => {
+    if (e.key === 'Escape') {
+      this.onHideDropdown();
+    }
+  }
+
+  setTargetRef = c => {
+    this.target = c;
+  }
+
+  findTarget = () => {
+    return this.target;
+  }
+
+  render () {
+    const { intl, onPickEmoji, onSkinTone, skinTone, frequentlyUsedEmojis } = this.props;
+    const title = intl.formatMessage(messages.emoji);
+    const { active, loading } = this.state;
+
+    return (
+      <div className='emoji-picker-dropdown' onKeyDown={this.handleKeyDown}>
+        <div ref={this.setTargetRef} className='emoji-button' title={title} aria-label={title} aria-expanded={active} role='button' onClick={this.onToggle} onKeyDown={this.onToggle} tabIndex={0}>
+          <img
+            className={classNames('emojione', { 'pulse-loading': active && loading })}
+            alt='🙂'
+            src={`${assetHost}/emoji/1f602.svg`}
+          />
+        </div>
+
+        <Overlay show={active} placement='bottom' target={this.findTarget}>
+          <EmojiPickerMenu
+            custom_emojis={this.props.custom_emojis}
+            loading={loading}
+            onClose={this.onHideDropdown}
+            onPick={onPickEmoji}
+            onSkinTone={onSkinTone}
+            skinTone={skinTone}
+            frequentlyUsedEmojis={frequentlyUsedEmojis}
+          />
+        </Overlay>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/navigation_bar.js b/app/javascript/mastodon/features/compose/components/navigation_bar.js
new file mode 100644
index 00000000000..7f346854ce4
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/navigation_bar.js
@@ -0,0 +1,38 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import Avatar from '../../../components/avatar';
+import IconButton from '../../../components/icon_button';
+import Permalink from '../../../components/permalink';
+import { FormattedMessage } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+export default class NavigationBar extends ImmutablePureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map.isRequired,
+    onClose: PropTypes.func.isRequired,
+  };
+
+  render () {
+    return (
+      <div className='navigation-bar'>
+        <Permalink href={this.props.account.get('url')} to={`/accounts/${this.props.account.get('id')}`}>
+          <span style={{ display: 'none' }}>{this.props.account.get('acct')}</span>
+          <Avatar account={this.props.account} size={40} />
+        </Permalink>
+
+        <div className='navigation-bar__profile'>
+          <Permalink href={this.props.account.get('url')} to={`/accounts/${this.props.account.get('id')}`}>
+            <strong className='navigation-bar__profile-account'>@{this.props.account.get('acct')}</strong>
+          </Permalink>
+
+          <a href='/settings/profile' className='navigation-bar__profile-edit'><FormattedMessage id='navigation_bar.edit_profile' defaultMessage='Edit profile' /></a>
+        </div>
+
+        <IconButton title='' icon='close' onClick={this.props.onClose} />
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/privacy_dropdown.js b/app/javascript/mastodon/features/compose/components/privacy_dropdown.js
new file mode 100644
index 00000000000..c1e85aee3af
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/privacy_dropdown.js
@@ -0,0 +1,200 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { injectIntl, defineMessages } from 'react-intl';
+import IconButton from '../../../components/icon_button';
+import Overlay from 'react-overlays/lib/Overlay';
+import Motion from '../../ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import detectPassiveEvents from 'detect-passive-events';
+import classNames from 'classnames';
+
+const messages = defineMessages({
+  public_short: { id: 'privacy.public.short', defaultMessage: 'Public' },
+  public_long: { id: 'privacy.public.long', defaultMessage: 'Post to public timelines' },
+  unlisted_short: { id: 'privacy.unlisted.short', defaultMessage: 'Unlisted' },
+  unlisted_long: { id: 'privacy.unlisted.long', defaultMessage: 'Do not show in public timelines' },
+  private_short: { id: 'privacy.private.short', defaultMessage: 'Followers-only' },
+  private_long: { id: 'privacy.private.long', defaultMessage: 'Post to followers only' },
+  direct_short: { id: 'privacy.direct.short', defaultMessage: 'Direct' },
+  direct_long: { id: 'privacy.direct.long', defaultMessage: 'Post to mentioned users only' },
+  change_privacy: { id: 'privacy.change', defaultMessage: 'Adjust status privacy' },
+});
+
+const listenerOptions = detectPassiveEvents.hasSupport ? { passive: true } : false;
+
+class PrivacyDropdownMenu extends React.PureComponent {
+
+  static propTypes = {
+    style: PropTypes.object,
+    items: PropTypes.array.isRequired,
+    value: PropTypes.string.isRequired,
+    onClose: PropTypes.func.isRequired,
+    onChange: PropTypes.func.isRequired,
+  };
+
+  handleDocumentClick = e => {
+    if (this.node && !this.node.contains(e.target)) {
+      this.props.onClose();
+    }
+  }
+
+  handleClick = e => {
+    if (e.key === 'Escape') {
+      this.props.onClose();
+    } else if (!e.key || e.key === 'Enter') {
+      const value = e.currentTarget.getAttribute('data-index');
+
+      e.preventDefault();
+
+      this.props.onClose();
+      this.props.onChange(value);
+    }
+  }
+
+  componentDidMount () {
+    document.addEventListener('click', this.handleDocumentClick, false);
+    document.addEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  componentWillUnmount () {
+    document.removeEventListener('click', this.handleDocumentClick, false);
+    document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions);
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  render () {
+    const { style, items, value } = this.props;
+
+    return (
+      <Motion defaultStyle={{ opacity: 0, scaleX: 0.85, scaleY: 0.75 }} style={{ opacity: spring(1, { damping: 35, stiffness: 400 }), scaleX: spring(1, { damping: 35, stiffness: 400 }), scaleY: spring(1, { damping: 35, stiffness: 400 }) }}>
+        {({ opacity, scaleX, scaleY }) => (
+          <div className='privacy-dropdown__dropdown' style={{ ...style, opacity: opacity, transform: `scale(${scaleX}, ${scaleY})` }} ref={this.setRef}>
+            {items.map(item =>
+              <div role='button' tabIndex='0' key={item.value} data-index={item.value} onKeyDown={this.handleClick} onClick={this.handleClick} className={classNames('privacy-dropdown__option', { active: item.value === value })}>
+                <div className='privacy-dropdown__option__icon'>
+                  <i className={`fa fa-fw fa-${item.icon}`} />
+                </div>
+
+                <div className='privacy-dropdown__option__content'>
+                  <strong>{item.text}</strong>
+                  {item.meta}
+                </div>
+              </div>
+            )}
+          </div>
+        )}
+      </Motion>
+    );
+  }
+
+}
+
+@injectIntl
+export default class PrivacyDropdown extends React.PureComponent {
+
+  static propTypes = {
+    isUserTouching: PropTypes.func,
+    isModalOpen: PropTypes.bool.isRequired,
+    onModalOpen: PropTypes.func,
+    onModalClose: PropTypes.func,
+    value: PropTypes.string.isRequired,
+    onChange: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  state = {
+    open: false,
+  };
+
+  handleToggle = () => {
+    if (this.props.isUserTouching()) {
+      if (this.state.open) {
+        this.props.onModalClose();
+      } else {
+        this.props.onModalOpen({
+          actions: this.options.map(option => ({ ...option, active: option.value === this.props.value })),
+          onClick: this.handleModalActionClick,
+        });
+      }
+    } else {
+      this.setState({ open: !this.state.open });
+    }
+  }
+
+  handleModalActionClick = (e) => {
+    e.preventDefault();
+
+    const { value } = this.options[e.currentTarget.getAttribute('data-index')];
+
+    this.props.onModalClose();
+    this.props.onChange(value);
+  }
+
+  handleKeyDown = e => {
+    switch(e.key) {
+    case 'Enter':
+      this.handleToggle();
+      break;
+    case 'Escape':
+      this.handleClose();
+      break;
+    }
+  }
+
+  handleClose = () => {
+    this.setState({ open: false });
+  }
+
+  handleChange = value => {
+    this.props.onChange(value);
+  }
+
+  componentWillMount () {
+    const { intl: { formatMessage } } = this.props;
+
+    this.options = [
+      { icon: 'globe', value: 'public', text: formatMessage(messages.public_short), meta: formatMessage(messages.public_long) },
+      { icon: 'unlock-alt', value: 'unlisted', text: formatMessage(messages.unlisted_short), meta: formatMessage(messages.unlisted_long) },
+      { icon: 'lock', value: 'private', text: formatMessage(messages.private_short), meta: formatMessage(messages.private_long) },
+      { icon: 'envelope', value: 'direct', text: formatMessage(messages.direct_short), meta: formatMessage(messages.direct_long) },
+    ];
+  }
+
+  render () {
+    const { value, intl } = this.props;
+    const { open } = this.state;
+
+    const valueOption = this.options.find(item => item.value === value);
+
+    return (
+      <div className={classNames('privacy-dropdown', { active: open })} onKeyDown={this.handleKeyDown}>
+        <div className={classNames('privacy-dropdown__value', { active: this.options.indexOf(valueOption) === 0 })}>
+          <IconButton
+            className='privacy-dropdown__value-icon'
+            icon={valueOption.icon}
+            title={intl.formatMessage(messages.change_privacy)}
+            size={18}
+            expanded={open}
+            active={open}
+            inverted
+            onClick={this.handleToggle}
+            style={{ height: null, lineHeight: '27px' }}
+          />
+        </div>
+
+        <Overlay show={open} placement='bottom' target={this}>
+          <PrivacyDropdownMenu
+            items={this.options}
+            value={value}
+            onClose={this.handleClose}
+            onChange={this.handleChange}
+          />
+        </Overlay>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/reply_indicator.js b/app/javascript/mastodon/features/compose/components/reply_indicator.js
new file mode 100644
index 00000000000..7672440b49f
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/reply_indicator.js
@@ -0,0 +1,63 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import Avatar from '../../../components/avatar';
+import IconButton from '../../../components/icon_button';
+import DisplayName from '../../../components/display_name';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const messages = defineMessages({
+  cancel: { id: 'reply_indicator.cancel', defaultMessage: 'Cancel' },
+});
+
+@injectIntl
+export default class ReplyIndicator extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    status: ImmutablePropTypes.map,
+    onCancel: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  handleClick = () => {
+    this.props.onCancel();
+  }
+
+  handleAccountClick = (e) => {
+    if (e.button === 0) {
+      e.preventDefault();
+      this.context.router.history.push(`/accounts/${this.props.status.getIn(['account', 'id'])}`);
+    }
+  }
+
+  render () {
+    const { status, intl } = this.props;
+
+    if (!status) {
+      return null;
+    }
+
+    const content  = { __html: status.get('contentHtml') };
+
+    return (
+      <div className='reply-indicator'>
+        <div className='reply-indicator__header'>
+          <div className='reply-indicator__cancel'><IconButton title={intl.formatMessage(messages.cancel)} icon='times' onClick={this.handleClick} /></div>
+
+          <a href={status.getIn(['account', 'url'])} onClick={this.handleAccountClick} className='reply-indicator__display-name'>
+            <div className='reply-indicator__display-avatar'><Avatar account={status.get('account')} size={24} /></div>
+            <DisplayName account={status.get('account')} />
+          </a>
+        </div>
+
+        <div className='reply-indicator__content' dangerouslySetInnerHTML={content} />
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/search.js b/app/javascript/mastodon/features/compose/components/search.js
new file mode 100644
index 00000000000..398fc44ceeb
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/search.js
@@ -0,0 +1,129 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import Overlay from 'react-overlays/lib/Overlay';
+import Motion from '../../ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+
+const messages = defineMessages({
+  placeholder: { id: 'search.placeholder', defaultMessage: 'Search' },
+});
+
+class SearchPopout extends React.PureComponent {
+
+  static propTypes = {
+    style: PropTypes.object,
+  };
+
+  render () {
+    const { style } = this.props;
+
+    return (
+      <div style={{ ...style, position: 'absolute', width: 285 }}>
+        <Motion defaultStyle={{ opacity: 0, scaleX: 0.85, scaleY: 0.75 }} style={{ opacity: spring(1, { damping: 35, stiffness: 400 }), scaleX: spring(1, { damping: 35, stiffness: 400 }), scaleY: spring(1, { damping: 35, stiffness: 400 }) }}>
+          {({ opacity, scaleX, scaleY }) => (
+            <div className='search-popout' style={{ opacity: opacity, transform: `scale(${scaleX}, ${scaleY})` }}>
+              <h4><FormattedMessage id='search_popout.search_format' defaultMessage='Advanced search format' /></h4>
+
+              <ul>
+                <li><em>#example</em> <FormattedMessage id='search_popout.tips.hashtag' defaultMessage='hashtag' /></li>
+                <li><em>@username@domain</em> <FormattedMessage id='search_popout.tips.user' defaultMessage='user' /></li>
+                <li><em>URL</em> <FormattedMessage id='search_popout.tips.user' defaultMessage='user' /></li>
+                <li><em>URL</em> <FormattedMessage id='search_popout.tips.status' defaultMessage='status' /></li>
+              </ul>
+
+              <FormattedMessage id='search_popout.tips.text' defaultMessage='Simple text returns matching display names, usernames and hashtags' />
+            </div>
+          )}
+        </Motion>
+      </div>
+    );
+  }
+
+}
+
+@injectIntl
+export default class Search extends React.PureComponent {
+
+  static propTypes = {
+    value: PropTypes.string.isRequired,
+    submitted: PropTypes.bool,
+    onChange: PropTypes.func.isRequired,
+    onSubmit: PropTypes.func.isRequired,
+    onClear: PropTypes.func.isRequired,
+    onShow: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  state = {
+    expanded: false,
+  };
+
+  handleChange = (e) => {
+    this.props.onChange(e.target.value);
+  }
+
+  handleClear = (e) => {
+    e.preventDefault();
+
+    if (this.props.value.length > 0 || this.props.submitted) {
+      this.props.onClear();
+    }
+  }
+
+  handleKeyDown = (e) => {
+    if (e.key === 'Enter') {
+      e.preventDefault();
+      this.props.onSubmit();
+    } else if (e.key === 'Escape') {
+      document.querySelector('.ui').parentElement.focus();
+    }
+  }
+
+  noop () {
+
+  }
+
+  handleFocus = () => {
+    this.setState({ expanded: true });
+    this.props.onShow();
+  }
+
+  handleBlur = () => {
+    this.setState({ expanded: false });
+  }
+
+  render () {
+    const { intl, value, submitted } = this.props;
+    const { expanded } = this.state;
+    const hasValue = value.length > 0 || submitted;
+
+    return (
+      <div className='search'>
+        <label>
+          <span style={{ display: 'none' }}>{intl.formatMessage(messages.placeholder)}</span>
+          <input
+            className='search__input'
+            type='text'
+            placeholder={intl.formatMessage(messages.placeholder)}
+            value={value}
+            onChange={this.handleChange}
+            onKeyUp={this.handleKeyDown}
+            onFocus={this.handleFocus}
+            onBlur={this.handleBlur}
+          />
+        </label>
+
+        <div role='button' tabIndex='0' className='search__icon' onClick={this.handleClear}>
+          <i className={`fa fa-search ${hasValue ? '' : 'active'}`} />
+          <i aria-label={intl.formatMessage(messages.placeholder)} className={`fa fa-times-circle ${hasValue ? 'active' : ''}`} />
+        </div>
+
+        <Overlay show={expanded && !hasValue} placement='bottom' target={this}>
+          <SearchPopout />
+        </Overlay>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/search_results.js b/app/javascript/mastodon/features/compose/components/search_results.js
new file mode 100644
index 00000000000..8350d20a5b4
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/search_results.js
@@ -0,0 +1,65 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { FormattedMessage } from 'react-intl';
+import AccountContainer from '../../../containers/account_container';
+import StatusContainer from '../../../containers/status_container';
+import { Link } from 'react-router-dom';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+export default class SearchResults extends ImmutablePureComponent {
+
+  static propTypes = {
+    results: ImmutablePropTypes.map.isRequired,
+  };
+
+  render () {
+    const { results } = this.props;
+
+    let accounts, statuses, hashtags;
+    let count = 0;
+
+    if (results.get('accounts') && results.get('accounts').size > 0) {
+      count   += results.get('accounts').size;
+      accounts = (
+        <div className='search-results__section'>
+          {results.get('accounts').map(accountId => <AccountContainer key={accountId} id={accountId} />)}
+        </div>
+      );
+    }
+
+    if (results.get('statuses') && results.get('statuses').size > 0) {
+      count   += results.get('statuses').size;
+      statuses = (
+        <div className='search-results__section'>
+          {results.get('statuses').map(statusId => <StatusContainer key={statusId} id={statusId} />)}
+        </div>
+      );
+    }
+
+    if (results.get('hashtags') && results.get('hashtags').size > 0) {
+      count += results.get('hashtags').size;
+      hashtags = (
+        <div className='search-results__section'>
+          {results.get('hashtags').map(hashtag =>
+            <Link key={hashtag} className='search-results__hashtag' to={`/timelines/tag/${hashtag}`}>
+              #{hashtag}
+            </Link>
+          )}
+        </div>
+      );
+    }
+
+    return (
+      <div className='search-results'>
+        <div className='search-results__header'>
+          <FormattedMessage id='search_results.total' defaultMessage='{count, number} {count, plural, one {result} other {results}}' values={{ count }} />
+        </div>
+
+        {accounts}
+        {statuses}
+        {hashtags}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/text_icon_button.js b/app/javascript/mastodon/features/compose/components/text_icon_button.js
new file mode 100644
index 00000000000..9c8ffab1f93
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/text_icon_button.js
@@ -0,0 +1,29 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+export default class TextIconButton extends React.PureComponent {
+
+  static propTypes = {
+    label: PropTypes.string.isRequired,
+    title: PropTypes.string,
+    active: PropTypes.bool,
+    onClick: PropTypes.func.isRequired,
+    ariaControls: PropTypes.string,
+  };
+
+  handleClick = (e) => {
+    e.preventDefault();
+    this.props.onClick();
+  }
+
+  render () {
+    const { label, title, active, ariaControls } = this.props;
+
+    return (
+      <button title={title} aria-label={title} className={`text-icon-button ${active ? 'active' : ''}`} aria-expanded={active} onClick={this.handleClick} aria-controls={ariaControls}>
+        {label}
+      </button>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/upload.js b/app/javascript/mastodon/features/compose/components/upload.js
new file mode 100644
index 00000000000..6ab76492a91
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/upload.js
@@ -0,0 +1,96 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import IconButton from '../../../components/icon_button';
+import Motion from '../../ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { defineMessages, injectIntl } from 'react-intl';
+import classNames from 'classnames';
+
+const messages = defineMessages({
+  undo: { id: 'upload_form.undo', defaultMessage: 'Undo' },
+  description: { id: 'upload_form.description', defaultMessage: 'Describe for the visually impaired' },
+});
+
+@injectIntl
+export default class Upload extends ImmutablePureComponent {
+
+  static propTypes = {
+    media: ImmutablePropTypes.map.isRequired,
+    intl: PropTypes.object.isRequired,
+    onUndo: PropTypes.func.isRequired,
+    onDescriptionChange: PropTypes.func.isRequired,
+  };
+
+  state = {
+    hovered: false,
+    focused: false,
+    dirtyDescription: null,
+  };
+
+  handleUndoClick = () => {
+    this.props.onUndo(this.props.media.get('id'));
+  }
+
+  handleInputChange = e => {
+    this.setState({ dirtyDescription: e.target.value });
+  }
+
+  handleMouseEnter = () => {
+    this.setState({ hovered: true });
+  }
+
+  handleMouseLeave = () => {
+    this.setState({ hovered: false });
+  }
+
+  handleInputFocus = () => {
+    this.setState({ focused: true });
+  }
+
+  handleInputBlur = () => {
+    const { dirtyDescription } = this.state;
+
+    this.setState({ focused: false, dirtyDescription: null });
+
+    if (dirtyDescription !== null) {
+      this.props.onDescriptionChange(this.props.media.get('id'), dirtyDescription);
+    }
+  }
+
+  render () {
+    const { intl, media } = this.props;
+    const active          = this.state.hovered || this.state.focused;
+    const description     = this.state.dirtyDescription || media.get('description') || '';
+
+    return (
+      <div className='compose-form__upload' onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave}>
+        <Motion defaultStyle={{ scale: 0.8 }} style={{ scale: spring(1, { stiffness: 180, damping: 12 }) }}>
+          {({ scale }) => (
+            <div className='compose-form__upload-thumbnail' style={{ transform: `scale(${scale})`, backgroundImage: `url(${media.get('preview_url')})` }}>
+              <IconButton icon='times' title={intl.formatMessage(messages.undo)} size={36} onClick={this.handleUndoClick} />
+
+              <div className={classNames('compose-form__upload-description', { active })}>
+                <label>
+                  <span style={{ display: 'none' }}>{intl.formatMessage(messages.description)}</span>
+
+                  <input
+                    placeholder={intl.formatMessage(messages.description)}
+                    type='text'
+                    value={description}
+                    maxLength={420}
+                    onFocus={this.handleInputFocus}
+                    onChange={this.handleInputChange}
+                    onBlur={this.handleInputBlur}
+                  />
+                </label>
+              </div>
+            </div>
+          )}
+        </Motion>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/upload_button.js b/app/javascript/mastodon/features/compose/components/upload_button.js
new file mode 100644
index 00000000000..70b28a2baeb
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/upload_button.js
@@ -0,0 +1,77 @@
+import React from 'react';
+import IconButton from '../../../components/icon_button';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl } from 'react-intl';
+import { connect } from 'react-redux';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+
+const messages = defineMessages({
+  upload: { id: 'upload_button.label', defaultMessage: 'Add media' },
+});
+
+const makeMapStateToProps = () => {
+  const mapStateToProps = state => ({
+    acceptContentTypes: state.getIn(['media_attachments', 'accept_content_types']),
+  });
+
+  return mapStateToProps;
+};
+
+const iconStyle = {
+  height: null,
+  lineHeight: '27px',
+};
+
+@connect(makeMapStateToProps)
+@injectIntl
+export default class UploadButton extends ImmutablePureComponent {
+
+  static propTypes = {
+    disabled: PropTypes.bool,
+    onSelectFile: PropTypes.func.isRequired,
+    style: PropTypes.object,
+    resetFileKey: PropTypes.number,
+    acceptContentTypes: ImmutablePropTypes.listOf(PropTypes.string).isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  handleChange = (e) => {
+    if (e.target.files.length > 0) {
+      this.props.onSelectFile(e.target.files);
+    }
+  }
+
+  handleClick = () => {
+    this.fileElement.click();
+  }
+
+  setRef = (c) => {
+    this.fileElement = c;
+  }
+
+  render () {
+
+    const { intl, resetFileKey, disabled, acceptContentTypes } = this.props;
+
+    return (
+      <div className='compose-form__upload-button'>
+        <IconButton icon='camera' title={intl.formatMessage(messages.upload)} disabled={disabled} onClick={this.handleClick} className='compose-form__upload-button-icon' size={18} inverted style={iconStyle} />
+        <label>
+          <span style={{ display: 'none' }}>{intl.formatMessage(messages.upload)}</span>
+          <input
+            key={resetFileKey}
+            ref={this.setRef}
+            type='file'
+            multiple={false}
+            accept={acceptContentTypes.toArray().join(',')}
+            onChange={this.handleChange}
+            disabled={disabled}
+            style={{ display: 'none' }}
+          />
+        </label>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/upload_form.js b/app/javascript/mastodon/features/compose/components/upload_form.js
new file mode 100644
index 00000000000..b7f11220530
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/upload_form.js
@@ -0,0 +1,29 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import UploadProgressContainer from '../containers/upload_progress_container';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import UploadContainer from '../containers/upload_container';
+
+export default class UploadForm extends ImmutablePureComponent {
+
+  static propTypes = {
+    mediaIds: ImmutablePropTypes.list.isRequired,
+  };
+
+  render () {
+    const { mediaIds } = this.props;
+
+    return (
+      <div className='compose-form__upload-wrapper'>
+        <UploadProgressContainer />
+
+        <div className='compose-form__uploads-wrapper'>
+          {mediaIds.map(id => (
+            <UploadContainer id={id} key={id} />
+          ))}
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/upload_progress.js b/app/javascript/mastodon/features/compose/components/upload_progress.js
new file mode 100644
index 00000000000..d5e6f19cda7
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/upload_progress.js
@@ -0,0 +1,42 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import Motion from '../../ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import { FormattedMessage } from 'react-intl';
+
+export default class UploadProgress extends React.PureComponent {
+
+  static propTypes = {
+    active: PropTypes.bool,
+    progress: PropTypes.number,
+  };
+
+  render () {
+    const { active, progress } = this.props;
+
+    if (!active) {
+      return null;
+    }
+
+    return (
+      <div className='upload-progress'>
+        <div className='upload-progress__icon'>
+          <i className='fa fa-upload' />
+        </div>
+
+        <div className='upload-progress__message'>
+          <FormattedMessage id='upload_progress.label' defaultMessage='Uploading...' />
+
+          <div className='upload-progress__backdrop'>
+            <Motion defaultStyle={{ width: 0 }} style={{ width: spring(progress) }}>
+              {({ width }) =>
+                <div className='upload-progress__tracker' style={{ width: `${width}%` }} />
+              }
+            </Motion>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/components/warning.js b/app/javascript/mastodon/features/compose/components/warning.js
new file mode 100644
index 00000000000..803b7f86abd
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/components/warning.js
@@ -0,0 +1,26 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import Motion from '../../ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+
+export default class Warning extends React.PureComponent {
+
+  static propTypes = {
+    message: PropTypes.node.isRequired,
+  };
+
+  render () {
+    const { message } = this.props;
+
+    return (
+      <Motion defaultStyle={{ opacity: 0, scaleX: 0.85, scaleY: 0.75 }} style={{ opacity: spring(1, { damping: 35, stiffness: 400 }), scaleX: spring(1, { damping: 35, stiffness: 400 }), scaleY: spring(1, { damping: 35, stiffness: 400 }) }}>
+        {({ opacity, scaleX, scaleY }) => (
+          <div className='compose-form__warning' style={{ opacity: opacity, transform: `scale(${scaleX}, ${scaleY})` }}>
+            {message}
+          </div>
+        )}
+      </Motion>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/containers/autosuggest_account_container.js b/app/javascript/mastodon/features/compose/containers/autosuggest_account_container.js
new file mode 100644
index 00000000000..4190e54cac9
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/autosuggest_account_container.js
@@ -0,0 +1,15 @@
+import { connect } from 'react-redux';
+import AutosuggestAccount from '../components/autosuggest_account';
+import { makeGetAccount } from '../../../selectors';
+
+const makeMapStateToProps = () => {
+  const getAccount = makeGetAccount();
+
+  const mapStateToProps = (state, { id }) => ({
+    account: getAccount(state, id),
+  });
+
+  return mapStateToProps;
+};
+
+export default connect(makeMapStateToProps)(AutosuggestAccount);
diff --git a/app/javascript/mastodon/features/compose/containers/compose_form_container.js b/app/javascript/mastodon/features/compose/containers/compose_form_container.js
new file mode 100644
index 00000000000..5f5509dbea5
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/compose_form_container.js
@@ -0,0 +1,64 @@
+import { connect } from 'react-redux';
+import ComposeForm from '../components/compose_form';
+import { uploadCompose } from '../../../actions/compose';
+import {
+  changeCompose,
+  submitCompose,
+  clearComposeSuggestions,
+  fetchComposeSuggestions,
+  selectComposeSuggestion,
+  changeComposeSpoilerText,
+  insertEmojiCompose,
+} from '../../../actions/compose';
+
+const mapStateToProps = state => ({
+  text: state.getIn(['compose', 'text']),
+  suggestion_token: state.getIn(['compose', 'suggestion_token']),
+  suggestions: state.getIn(['compose', 'suggestions']),
+  spoiler: state.getIn(['compose', 'spoiler']),
+  spoiler_text: state.getIn(['compose', 'spoiler_text']),
+  privacy: state.getIn(['compose', 'privacy']),
+  focusDate: state.getIn(['compose', 'focusDate']),
+  preselectDate: state.getIn(['compose', 'preselectDate']),
+  is_submitting: state.getIn(['compose', 'is_submitting']),
+  is_uploading: state.getIn(['compose', 'is_uploading']),
+  showSearch: state.getIn(['search', 'submitted']) && !state.getIn(['search', 'hidden']),
+});
+
+const mapDispatchToProps = (dispatch) => ({
+
+  onChange (text) {
+    dispatch(changeCompose(text));
+  },
+
+  onSubmit () {
+    dispatch(submitCompose());
+  },
+
+  onClearSuggestions () {
+    dispatch(clearComposeSuggestions());
+  },
+
+  onFetchSuggestions (token) {
+    dispatch(fetchComposeSuggestions(token));
+  },
+
+  onSuggestionSelected (position, token, accountId) {
+    dispatch(selectComposeSuggestion(position, token, accountId));
+  },
+
+  onChangeSpoilerText (checked) {
+    dispatch(changeComposeSpoilerText(checked));
+  },
+
+  onPaste (files) {
+    dispatch(uploadCompose(files));
+  },
+
+  onPickEmoji (position, data) {
+    dispatch(insertEmojiCompose(position, data));
+  },
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(ComposeForm);
diff --git a/app/javascript/mastodon/features/compose/containers/emoji_picker_dropdown_container.js b/app/javascript/mastodon/features/compose/containers/emoji_picker_dropdown_container.js
new file mode 100644
index 00000000000..e6a535a5dcd
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/emoji_picker_dropdown_container.js
@@ -0,0 +1,82 @@
+import { connect } from 'react-redux';
+import EmojiPickerDropdown from '../components/emoji_picker_dropdown';
+import { changeSetting } from '../../../actions/settings';
+import { createSelector } from 'reselect';
+import { Map as ImmutableMap } from 'immutable';
+import { useEmoji } from '../../../actions/emojis';
+
+const perLine = 8;
+const lines   = 2;
+
+const DEFAULTS = [
+  '+1',
+  'grinning',
+  'kissing_heart',
+  'heart_eyes',
+  'laughing',
+  'stuck_out_tongue_winking_eye',
+  'sweat_smile',
+  'joy',
+  'yum',
+  'disappointed',
+  'thinking_face',
+  'weary',
+  'sob',
+  'sunglasses',
+  'heart',
+  'ok_hand',
+];
+
+const getFrequentlyUsedEmojis = createSelector([
+  state => state.getIn(['settings', 'frequentlyUsedEmojis'], ImmutableMap()),
+], emojiCounters => {
+  let emojis = emojiCounters
+    .keySeq()
+    .sort((a, b) => emojiCounters.get(a) - emojiCounters.get(b))
+    .reverse()
+    .slice(0, perLine * lines)
+    .toArray();
+
+  if (emojis.length < DEFAULTS.length) {
+    emojis = emojis.concat(DEFAULTS.slice(0, DEFAULTS.length - emojis.length));
+  }
+
+  return emojis;
+});
+
+const getCustomEmojis = createSelector([
+  state => state.get('custom_emojis'),
+], emojis => emojis.filter(e => e.get('visible_in_picker')).sort((a, b) => {
+  const aShort = a.get('shortcode').toLowerCase();
+  const bShort = b.get('shortcode').toLowerCase();
+
+  if (aShort < bShort) {
+    return -1;
+  } else if (aShort > bShort ) {
+    return 1;
+  } else {
+    return 0;
+  }
+}));
+
+const mapStateToProps = state => ({
+  custom_emojis: getCustomEmojis(state),
+  skinTone: state.getIn(['settings', 'skinTone']),
+  frequentlyUsedEmojis: getFrequentlyUsedEmojis(state),
+});
+
+const mapDispatchToProps = (dispatch, { onPickEmoji }) => ({
+  onSkinTone: skinTone => {
+    dispatch(changeSetting(['skinTone'], skinTone));
+  },
+
+  onPickEmoji: emoji => {
+    dispatch(useEmoji(emoji));
+
+    if (onPickEmoji) {
+      onPickEmoji(emoji);
+    }
+  },
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(EmojiPickerDropdown);
diff --git a/app/javascript/mastodon/features/compose/containers/navigation_container.js b/app/javascript/mastodon/features/compose/containers/navigation_container.js
new file mode 100644
index 00000000000..eb9f3ea45e6
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/navigation_container.js
@@ -0,0 +1,11 @@
+import { connect }   from 'react-redux';
+import NavigationBar from '../components/navigation_bar';
+import { me } from '../../../initial_state';
+
+const mapStateToProps = state => {
+  return {
+    account: state.getIn(['accounts', me]),
+  };
+};
+
+export default connect(mapStateToProps)(NavigationBar);
diff --git a/app/javascript/mastodon/features/compose/containers/privacy_dropdown_container.js b/app/javascript/mastodon/features/compose/containers/privacy_dropdown_container.js
new file mode 100644
index 00000000000..0ddf531d317
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/privacy_dropdown_container.js
@@ -0,0 +1,24 @@
+import { connect } from 'react-redux';
+import PrivacyDropdown from '../components/privacy_dropdown';
+import { changeComposeVisibility } from '../../../actions/compose';
+import { openModal, closeModal } from '../../../actions/modal';
+import { isUserTouching } from '../../../is_mobile';
+
+const mapStateToProps = state => ({
+  isModalOpen: state.get('modal').modalType === 'ACTIONS',
+  value: state.getIn(['compose', 'privacy']),
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onChange (value) {
+    dispatch(changeComposeVisibility(value));
+  },
+
+  isUserTouching,
+  onModalOpen: props => dispatch(openModal('ACTIONS', props)),
+  onModalClose: () => dispatch(closeModal()),
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(PrivacyDropdown);
diff --git a/app/javascript/mastodon/features/compose/containers/reply_indicator_container.js b/app/javascript/mastodon/features/compose/containers/reply_indicator_container.js
new file mode 100644
index 00000000000..73f394c1af6
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/reply_indicator_container.js
@@ -0,0 +1,24 @@
+import { connect } from 'react-redux';
+import { cancelReplyCompose } from '../../../actions/compose';
+import { makeGetStatus } from '../../../selectors';
+import ReplyIndicator from '../components/reply_indicator';
+
+const makeMapStateToProps = () => {
+  const getStatus = makeGetStatus();
+
+  const mapStateToProps = state => ({
+    status: getStatus(state, state.getIn(['compose', 'in_reply_to'])),
+  });
+
+  return mapStateToProps;
+};
+
+const mapDispatchToProps = dispatch => ({
+
+  onCancel () {
+    dispatch(cancelReplyCompose());
+  },
+
+});
+
+export default connect(makeMapStateToProps, mapDispatchToProps)(ReplyIndicator);
diff --git a/app/javascript/mastodon/features/compose/containers/search_container.js b/app/javascript/mastodon/features/compose/containers/search_container.js
new file mode 100644
index 00000000000..392bd0f5665
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/search_container.js
@@ -0,0 +1,35 @@
+import { connect } from 'react-redux';
+import {
+  changeSearch,
+  clearSearch,
+  submitSearch,
+  showSearch,
+} from '../../../actions/search';
+import Search from '../components/search';
+
+const mapStateToProps = state => ({
+  value: state.getIn(['search', 'value']),
+  submitted: state.getIn(['search', 'submitted']),
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onChange (value) {
+    dispatch(changeSearch(value));
+  },
+
+  onClear () {
+    dispatch(clearSearch());
+  },
+
+  onSubmit () {
+    dispatch(submitSearch());
+  },
+
+  onShow () {
+    dispatch(showSearch());
+  },
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(Search);
diff --git a/app/javascript/mastodon/features/compose/containers/search_results_container.js b/app/javascript/mastodon/features/compose/containers/search_results_container.js
new file mode 100644
index 00000000000..16d95d417e4
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/search_results_container.js
@@ -0,0 +1,8 @@
+import { connect } from 'react-redux';
+import SearchResults from '../components/search_results';
+
+const mapStateToProps = state => ({
+  results: state.getIn(['search', 'results']),
+});
+
+export default connect(mapStateToProps)(SearchResults);
diff --git a/app/javascript/mastodon/features/compose/containers/sensitive_button_container.js b/app/javascript/mastodon/features/compose/containers/sensitive_button_container.js
new file mode 100644
index 00000000000..c8e74f5a1a5
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/sensitive_button_container.js
@@ -0,0 +1,71 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import classNames from 'classnames';
+import IconButton from '../../../components/icon_button';
+import { changeComposeSensitivity } from '../../../actions/compose';
+import Motion from '../../ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import { injectIntl, defineMessages } from 'react-intl';
+
+const messages = defineMessages({
+  title: { id: 'compose_form.sensitive', defaultMessage: 'Mark media as sensitive' },
+});
+
+const mapStateToProps = state => ({
+  visible: state.getIn(['compose', 'media_attachments']).size > 0,
+  active: state.getIn(['compose', 'sensitive']),
+  disabled: state.getIn(['compose', 'spoiler']),
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onClick () {
+    dispatch(changeComposeSensitivity());
+  },
+
+});
+
+class SensitiveButton extends React.PureComponent {
+
+  static propTypes = {
+    visible: PropTypes.bool,
+    active: PropTypes.bool,
+    disabled: PropTypes.bool,
+    onClick: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  render () {
+    const { visible, active, disabled, onClick, intl } = this.props;
+
+    return (
+      <Motion defaultStyle={{ scale: 0.87 }} style={{ scale: spring(visible ? 1 : 0.87, { stiffness: 200, damping: 3 }) }}>
+        {({ scale }) => {
+          const icon = active ? 'eye-slash' : 'eye';
+          const className = classNames('compose-form__sensitive-button', {
+            'compose-form__sensitive-button--visible': visible,
+          });
+          return (
+            <div className={className} style={{ transform: `scale(${scale})` }}>
+              <IconButton
+                className='compose-form__sensitive-button__icon'
+                title={intl.formatMessage(messages.title)}
+                icon={icon}
+                onClick={onClick}
+                size={18}
+                active={active}
+                disabled={disabled}
+                style={{ lineHeight: null, height: null }}
+                inverted
+              />
+            </div>
+          );
+        }}
+      </Motion>
+    );
+  }
+
+}
+
+export default connect(mapStateToProps, mapDispatchToProps)(injectIntl(SensitiveButton));
diff --git a/app/javascript/mastodon/features/compose/containers/spoiler_button_container.js b/app/javascript/mastodon/features/compose/containers/spoiler_button_container.js
new file mode 100644
index 00000000000..4179b970602
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/spoiler_button_container.js
@@ -0,0 +1,25 @@
+import { connect } from 'react-redux';
+import TextIconButton from '../components/text_icon_button';
+import { changeComposeSpoilerness } from '../../../actions/compose';
+import { injectIntl, defineMessages } from 'react-intl';
+
+const messages = defineMessages({
+  title: { id: 'compose_form.spoiler', defaultMessage: 'Hide text behind warning' },
+});
+
+const mapStateToProps = (state, { intl }) => ({
+  label: 'CW',
+  title: intl.formatMessage(messages.title),
+  active: state.getIn(['compose', 'spoiler']),
+  ariaControls: 'cw-spoiler-input',
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onClick () {
+    dispatch(changeComposeSpoilerness());
+  },
+
+});
+
+export default injectIntl(connect(mapStateToProps, mapDispatchToProps)(TextIconButton));
diff --git a/app/javascript/mastodon/features/compose/containers/upload_button_container.js b/app/javascript/mastodon/features/compose/containers/upload_button_container.js
new file mode 100644
index 00000000000..1f1d915bc84
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/upload_button_container.js
@@ -0,0 +1,18 @@
+import { connect } from 'react-redux';
+import UploadButton from '../components/upload_button';
+import { uploadCompose } from '../../../actions/compose';
+
+const mapStateToProps = state => ({
+  disabled: state.getIn(['compose', 'is_uploading']) || (state.getIn(['compose', 'media_attachments']).size > 3 || state.getIn(['compose', 'media_attachments']).some(m => m.get('type') === 'video')),
+  resetFileKey: state.getIn(['compose', 'resetFileKey']),
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onSelectFile (files) {
+    dispatch(uploadCompose(files));
+  },
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(UploadButton);
diff --git a/app/javascript/mastodon/features/compose/containers/upload_container.js b/app/javascript/mastodon/features/compose/containers/upload_container.js
new file mode 100644
index 00000000000..ca9c3b70402
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/upload_container.js
@@ -0,0 +1,21 @@
+import { connect } from 'react-redux';
+import Upload from '../components/upload';
+import { undoUploadCompose, changeUploadCompose } from '../../../actions/compose';
+
+const mapStateToProps = (state, { id }) => ({
+  media: state.getIn(['compose', 'media_attachments']).find(item => item.get('id') === id),
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onUndo: id => {
+    dispatch(undoUploadCompose(id));
+  },
+
+  onDescriptionChange: (id, description) => {
+    dispatch(changeUploadCompose(id, description));
+  },
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(Upload);
diff --git a/app/javascript/mastodon/features/compose/containers/upload_form_container.js b/app/javascript/mastodon/features/compose/containers/upload_form_container.js
new file mode 100644
index 00000000000..a6798bf512c
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/upload_form_container.js
@@ -0,0 +1,8 @@
+import { connect } from 'react-redux';
+import UploadForm from '../components/upload_form';
+
+const mapStateToProps = state => ({
+  mediaIds: state.getIn(['compose', 'media_attachments']).map(item => item.get('id')),
+});
+
+export default connect(mapStateToProps)(UploadForm);
diff --git a/app/javascript/mastodon/features/compose/containers/upload_progress_container.js b/app/javascript/mastodon/features/compose/containers/upload_progress_container.js
new file mode 100644
index 00000000000..0cfee96daaa
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/upload_progress_container.js
@@ -0,0 +1,9 @@
+import { connect } from 'react-redux';
+import UploadProgress from '../components/upload_progress';
+
+const mapStateToProps = state => ({
+  active: state.getIn(['compose', 'is_uploading']),
+  progress: state.getIn(['compose', 'progress']),
+});
+
+export default connect(mapStateToProps)(UploadProgress);
diff --git a/app/javascript/mastodon/features/compose/containers/warning_container.js b/app/javascript/mastodon/features/compose/containers/warning_container.js
new file mode 100644
index 00000000000..d34471a3e99
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/containers/warning_container.js
@@ -0,0 +1,24 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import Warning from '../components/warning';
+import PropTypes from 'prop-types';
+import { FormattedMessage } from 'react-intl';
+import { me } from '../../../initial_state';
+
+const mapStateToProps = state => ({
+  needsLockWarning: state.getIn(['compose', 'privacy']) === 'private' && !state.getIn(['accounts', me, 'locked']),
+});
+
+const WarningWrapper = ({ needsLockWarning }) => {
+  if (needsLockWarning) {
+    return <Warning message={<FormattedMessage id='compose_form.lock_disclaimer' defaultMessage='Your account is not {locked}. Anyone can follow you to view your follower-only posts.' values={{ locked: <a href='/settings/profile'><FormattedMessage id='compose_form.lock_disclaimer.lock' defaultMessage='locked' /></a> }} />} />;
+  }
+
+  return null;
+};
+
+WarningWrapper.propTypes = {
+  needsLockWarning: PropTypes.bool,
+};
+
+export default connect(mapStateToProps)(WarningWrapper);
diff --git a/app/javascript/mastodon/features/compose/index.js b/app/javascript/mastodon/features/compose/index.js
new file mode 100644
index 00000000000..0c66585c98d
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/index.js
@@ -0,0 +1,111 @@
+import React from 'react';
+import ComposeFormContainer from './containers/compose_form_container';
+import NavigationContainer from './containers/navigation_container';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { connect } from 'react-redux';
+import { mountCompose, unmountCompose } from '../../actions/compose';
+import { Link } from 'react-router-dom';
+import { injectIntl, defineMessages } from 'react-intl';
+import SearchContainer from './containers/search_container';
+import Motion from '../ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import SearchResultsContainer from './containers/search_results_container';
+import { changeComposing } from '../../actions/compose';
+
+const messages = defineMessages({
+  start: { id: 'getting_started.heading', defaultMessage: 'Getting started' },
+  home_timeline: { id: 'tabs_bar.home', defaultMessage: 'Home' },
+  notifications: { id: 'tabs_bar.notifications', defaultMessage: 'Notifications' },
+  public: { id: 'navigation_bar.public_timeline', defaultMessage: 'Federated timeline' },
+  community: { id: 'navigation_bar.community_timeline', defaultMessage: 'Local timeline' },
+  preferences: { id: 'navigation_bar.preferences', defaultMessage: 'Preferences' },
+  logout: { id: 'navigation_bar.logout', defaultMessage: 'Logout' },
+});
+
+const mapStateToProps = state => ({
+  columns: state.getIn(['settings', 'columns']),
+  showSearch: state.getIn(['search', 'submitted']) && !state.getIn(['search', 'hidden']),
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class Compose extends React.PureComponent {
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    columns: ImmutablePropTypes.list.isRequired,
+    multiColumn: PropTypes.bool,
+    showSearch: PropTypes.bool,
+    intl: PropTypes.object.isRequired,
+  };
+
+  componentDidMount () {
+    this.props.dispatch(mountCompose());
+  }
+
+  componentWillUnmount () {
+    this.props.dispatch(unmountCompose());
+  }
+
+  onFocus = () => {
+    this.props.dispatch(changeComposing(true));
+  }
+
+  onBlur = () => {
+    this.props.dispatch(changeComposing(false));
+  }
+
+  render () {
+    const { multiColumn, showSearch, intl } = this.props;
+
+    let header = '';
+
+    if (multiColumn) {
+      const { columns } = this.props;
+      header = (
+        <nav className='drawer__header'>
+          <Link to='/getting-started' className='drawer__tab' title={intl.formatMessage(messages.start)} aria-label={intl.formatMessage(messages.start)}><i role='img' className='fa fa-fw fa-asterisk' /></Link>
+          {!columns.some(column => column.get('id') === 'HOME') && (
+            <Link to='/timelines/home' className='drawer__tab' title={intl.formatMessage(messages.home_timeline)} aria-label={intl.formatMessage(messages.home_timeline)}><i role='img' className='fa fa-fw fa-home' /></Link>
+          )}
+          {!columns.some(column => column.get('id') === 'NOTIFICATIONS') && (
+            <Link to='/notifications' className='drawer__tab' title={intl.formatMessage(messages.notifications)} aria-label={intl.formatMessage(messages.notifications)}><i role='img' className='fa fa-fw fa-bell' /></Link>
+          )}
+          {!columns.some(column => column.get('id') === 'COMMUNITY') && (
+            <Link to='/timelines/public/local' className='drawer__tab' title={intl.formatMessage(messages.community)} aria-label={intl.formatMessage(messages.community)}><i role='img' className='fa fa-fw fa-users' /></Link>
+          )}
+          {!columns.some(column => column.get('id') === 'PUBLIC') && (
+            <Link to='/timelines/public' className='drawer__tab' title={intl.formatMessage(messages.public)} aria-label={intl.formatMessage(messages.public)}><i role='img' className='fa fa-fw fa-globe' /></Link>
+          )}
+          <a href='/settings/preferences' className='drawer__tab' title={intl.formatMessage(messages.preferences)} aria-label={intl.formatMessage(messages.preferences)}><i role='img' className='fa fa-fw fa-cog' /></a>
+          <a href='/auth/sign_out' className='drawer__tab' data-method='delete' title={intl.formatMessage(messages.logout)} aria-label={intl.formatMessage(messages.logout)}><i role='img' className='fa fa-fw fa-sign-out' /></a>
+        </nav>
+      );
+    }
+
+    return (
+      <div className='drawer'>
+        {header}
+
+        <SearchContainer />
+
+        <div className='drawer__pager'>
+          <div className='drawer__inner' onFocus={this.onFocus}>
+            <NavigationContainer onClose={this.onBlur} />
+            <ComposeFormContainer />
+          </div>
+
+          <Motion defaultStyle={{ x: -100 }} style={{ x: spring(showSearch ? 0 : -100, { stiffness: 210, damping: 20 }) }}>
+            {({ x }) =>
+              <div className='drawer__inner darker' style={{ transform: `translateX(${x}%)`, visibility: x === -100 ? 'hidden' : 'visible' }}>
+                <SearchResultsContainer />
+              </div>
+            }
+          </Motion>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/compose/util/counter.js b/app/javascript/mastodon/features/compose/util/counter.js
new file mode 100644
index 00000000000..700ba216354
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/util/counter.js
@@ -0,0 +1,9 @@
+import { urlRegex } from './url_regex';
+
+const urlPlaceholder = 'xxxxxxxxxxxxxxxxxxxxxxx';
+
+export function countableText(inputText) {
+  return inputText
+    .replace(urlRegex, urlPlaceholder)
+    .replace(/(^|[^\/\w])@(([a-z0-9_]+)@[a-z0-9\.\-]+[a-z0-9]+)/ig, '$1@$3');
+};
diff --git a/app/javascript/mastodon/features/compose/util/url_regex.js b/app/javascript/mastodon/features/compose/util/url_regex.js
new file mode 100644
index 00000000000..e676d187941
--- /dev/null
+++ b/app/javascript/mastodon/features/compose/util/url_regex.js
@@ -0,0 +1,196 @@
+const regexen = {};
+
+const regexSupplant = function(regex, flags) {
+  flags = flags || '';
+  if (typeof regex !== 'string') {
+    if (regex.global && flags.indexOf('g') < 0) {
+      flags += 'g';
+    }
+    if (regex.ignoreCase && flags.indexOf('i') < 0) {
+      flags += 'i';
+    }
+    if (regex.multiline && flags.indexOf('m') < 0) {
+      flags += 'm';
+    }
+
+    regex = regex.source;
+  }
+  return new RegExp(regex.replace(/#\{(\w+)\}/g, function(match, name) {
+    var newRegex = regexen[name] || '';
+    if (typeof newRegex !== 'string') {
+      newRegex = newRegex.source;
+    }
+    return newRegex;
+  }), flags);
+};
+
+const stringSupplant = function(str, values) {
+  return str.replace(/#\{(\w+)\}/g, function(match, name) {
+    return values[name] || '';
+  });
+};
+
+export const urlRegex = (function() {
+  regexen.spaces_group = /\x09-\x0D\x20\x85\xA0\u1680\u180E\u2000-\u200A\u2028\u2029\u202F\u205F\u3000/;
+  regexen.invalid_chars_group = /\uFFFE\uFEFF\uFFFF\u202A-\u202E/;
+  regexen.punct = /\!'#%&'\(\)*\+,\\\-\.\/:;<=>\?@\[\]\^_{|}~\$/;
+  regexen.validUrlPrecedingChars = regexSupplant(/(?:[^A-Za-z0-9@＠$#＃#{invalid_chars_group}]|^)/);
+  regexen.invalidDomainChars = stringSupplant('#{punct}#{spaces_group}#{invalid_chars_group}', regexen);
+  regexen.validDomainChars = regexSupplant(/[^#{invalidDomainChars}]/);
+  regexen.validSubdomain = regexSupplant(/(?:(?:#{validDomainChars}(?:[_-]|#{validDomainChars})*)?#{validDomainChars}\.)/);
+  regexen.validDomainName = regexSupplant(/(?:(?:#{validDomainChars}(?:-|#{validDomainChars})*)?#{validDomainChars}\.)/);
+  regexen.validGTLD = regexSupplant(RegExp(
+  '(?:(?:' +
+    '삼성|닷컴|닷넷|香格里拉|餐厅|食品|飞利浦|電訊盈科|集团|通販|购物|谷歌|诺基亚|联通|网络|网站|网店|网址|组织机构|移动|珠宝|点看|游戏|淡马锡|机构|書籍|时尚|新闻|政府|' +
+    '政务|手表|手机|我爱你|慈善|微博|广东|工行|家電|娱乐|天主教|大拿|大众汽车|在线|嘉里大酒店|嘉里|商标|商店|商城|公益|公司|八卦|健康|信息|佛山|企业|中文网|中信|世界|' +
+    'ポイント|ファッション|セール|ストア|コム|グーグル|クラウド|みんな|คอม|संगठन|नेट|कॉम|همراه|موقع|موبايلي|كوم|كاثوليك|عرب|شبكة|' +
+    'بيتك|بازار|العليان|ارامكو|اتصالات|ابوظبي|קום|сайт|рус|орг|онлайн|москва|ком|католик|дети|' +
+    'zuerich|zone|zippo|zip|zero|zara|zappos|yun|youtube|you|yokohama|yoga|yodobashi|yandex|yamaxun|' +
+    'yahoo|yachts|xyz|xxx|xperia|xin|xihuan|xfinity|xerox|xbox|wtf|wtc|wow|world|works|work|woodside|' +
+    'wolterskluwer|wme|winners|wine|windows|win|williamhill|wiki|wien|whoswho|weir|weibo|wedding|wed|' +
+    'website|weber|webcam|weatherchannel|weather|watches|watch|warman|wanggou|wang|walter|walmart|' +
+    'wales|vuelos|voyage|voto|voting|vote|volvo|volkswagen|vodka|vlaanderen|vivo|viva|vistaprint|' +
+    'vista|vision|visa|virgin|vip|vin|villas|viking|vig|video|viajes|vet|versicherung|' +
+    'vermögensberatung|vermögensberater|verisign|ventures|vegas|vanguard|vana|vacations|ups|uol|uno|' +
+    'university|unicom|uconnect|ubs|ubank|tvs|tushu|tunes|tui|tube|trv|trust|travelersinsurance|' +
+    'travelers|travelchannel|travel|training|trading|trade|toys|toyota|town|tours|total|toshiba|' +
+    'toray|top|tools|tokyo|today|tmall|tkmaxx|tjx|tjmaxx|tirol|tires|tips|tiffany|tienda|tickets|' +
+    'tiaa|theatre|theater|thd|teva|tennis|temasek|telefonica|telecity|tel|technology|tech|team|tdk|' +
+    'tci|taxi|tax|tattoo|tatar|tatamotors|target|taobao|talk|taipei|tab|systems|symantec|sydney|' +
+    'swiss|swiftcover|swatch|suzuki|surgery|surf|support|supply|supplies|sucks|style|study|studio|' +
+    'stream|store|storage|stockholm|stcgroup|stc|statoil|statefarm|statebank|starhub|star|staples|' +
+    'stada|srt|srl|spreadbetting|spot|spiegel|space|soy|sony|song|solutions|solar|sohu|software|' +
+    'softbank|social|soccer|sncf|smile|smart|sling|skype|sky|skin|ski|site|singles|sina|silk|shriram|' +
+    'showtime|show|shouji|shopping|shop|shoes|shiksha|shia|shell|shaw|sharp|shangrila|sfr|sexy|sex|' +
+    'sew|seven|ses|services|sener|select|seek|security|secure|seat|search|scot|scor|scjohnson|' +
+    'science|schwarz|schule|school|scholarships|schmidt|schaeffler|scb|sca|sbs|sbi|saxo|save|sas|' +
+    'sarl|sapo|sap|sanofi|sandvikcoromant|sandvik|samsung|samsclub|salon|sale|sakura|safety|safe|' +
+    'saarland|ryukyu|rwe|run|ruhr|rugby|rsvp|room|rogers|rodeo|rocks|rocher|rmit|rip|rio|ril|' +
+    'rightathome|ricoh|richardli|rich|rexroth|reviews|review|restaurant|rest|republican|report|' +
+    'repair|rentals|rent|ren|reliance|reit|reisen|reise|rehab|redumbrella|redstone|red|recipes|' +
+    'realty|realtor|realestate|read|raid|radio|racing|qvc|quest|quebec|qpon|pwc|pub|prudential|pru|' +
+    'protection|property|properties|promo|progressive|prof|productions|prod|pro|prime|press|praxi|' +
+    'pramerica|post|porn|politie|poker|pohl|pnc|plus|plumbing|playstation|play|place|pizza|pioneer|' +
+    'pink|ping|pin|pid|pictures|pictet|pics|piaget|physio|photos|photography|photo|phone|philips|phd|' +
+    'pharmacy|pfizer|pet|pccw|pay|passagens|party|parts|partners|pars|paris|panerai|panasonic|' +
+    'pamperedchef|page|ovh|ott|otsuka|osaka|origins|orientexpress|organic|org|orange|oracle|open|ooo|' +
+    'onyourside|online|onl|ong|one|omega|ollo|oldnavy|olayangroup|olayan|okinawa|office|off|observer|' +
+    'obi|nyc|ntt|nrw|nra|nowtv|nowruz|now|norton|northwesternmutual|nokia|nissay|nissan|ninja|nikon|' +
+    'nike|nico|nhk|ngo|nfl|nexus|nextdirect|next|news|newholland|new|neustar|network|netflix|netbank|' +
+    'net|nec|nba|navy|natura|nationwide|name|nagoya|nadex|nab|mutuelle|mutual|museum|mtr|mtpc|mtn|' +
+    'msd|movistar|movie|mov|motorcycles|moto|moscow|mortgage|mormon|mopar|montblanc|monster|money|' +
+    'monash|mom|moi|moe|moda|mobily|mobile|mobi|mma|mls|mlb|mitsubishi|mit|mint|mini|mil|microsoft|' +
+    'miami|metlife|merckmsd|meo|menu|men|memorial|meme|melbourne|meet|media|med|mckinsey|mcdonalds|' +
+    'mcd|mba|mattel|maserati|marshalls|marriott|markets|marketing|market|map|mango|management|man|' +
+    'makeup|maison|maif|madrid|macys|luxury|luxe|lupin|lundbeck|ltda|ltd|lplfinancial|lpl|love|lotto|' +
+    'lotte|london|lol|loft|locus|locker|loans|loan|lixil|living|live|lipsy|link|linde|lincoln|limo|' +
+    'limited|lilly|like|lighting|lifestyle|lifeinsurance|life|lidl|liaison|lgbt|lexus|lego|legal|' +
+    'lefrak|leclerc|lease|lds|lawyer|law|latrobe|latino|lat|lasalle|lanxess|landrover|land|lancome|' +
+    'lancia|lancaster|lamer|lamborghini|ladbrokes|lacaixa|kyoto|kuokgroup|kred|krd|kpn|kpmg|kosher|' +
+    'komatsu|koeln|kiwi|kitchen|kindle|kinder|kim|kia|kfh|kerryproperties|kerrylogistics|kerryhotels|' +
+    'kddi|kaufen|juniper|juegos|jprs|jpmorgan|joy|jot|joburg|jobs|jnj|jmp|jll|jlc|jio|jewelry|jetzt|' +
+    'jeep|jcp|jcb|java|jaguar|iwc|iveco|itv|itau|istanbul|ist|ismaili|iselect|irish|ipiranga|' +
+    'investments|intuit|international|intel|int|insure|insurance|institute|ink|ing|info|infiniti|' +
+    'industries|immobilien|immo|imdb|imamat|ikano|iinet|ifm|ieee|icu|ice|icbc|ibm|hyundai|hyatt|' +
+    'hughes|htc|hsbc|how|house|hotmail|hotels|hoteles|hot|hosting|host|hospital|horse|honeywell|' +
+    'honda|homesense|homes|homegoods|homedepot|holiday|holdings|hockey|hkt|hiv|hitachi|hisamitsu|' +
+    'hiphop|hgtv|hermes|here|helsinki|help|healthcare|health|hdfcbank|hdfc|hbo|haus|hangout|hamburg|' +
+    'hair|guru|guitars|guide|guge|gucci|guardian|group|grocery|gripe|green|gratis|graphics|grainger|' +
+    'gov|got|gop|google|goog|goodyear|goodhands|goo|golf|goldpoint|gold|godaddy|gmx|gmo|gmbh|gmail|' +
+    'globo|global|gle|glass|glade|giving|gives|gifts|gift|ggee|george|genting|gent|gea|gdn|gbiz|' +
+    'garden|gap|games|game|gallup|gallo|gallery|gal|fyi|futbol|furniture|fund|fun|fujixerox|fujitsu|' +
+    'ftr|frontier|frontdoor|frogans|frl|fresenius|free|fox|foundation|forum|forsale|forex|ford|' +
+    'football|foodnetwork|food|foo|fly|flsmidth|flowers|florist|flir|flights|flickr|fitness|fit|' +
+    'fishing|fish|firmdale|firestone|fire|financial|finance|final|film|fido|fidelity|fiat|ferrero|' +
+    'ferrari|feedback|fedex|fast|fashion|farmers|farm|fans|fan|family|faith|fairwinds|fail|fage|' +
+    'extraspace|express|exposed|expert|exchange|everbank|events|eus|eurovision|etisalat|esurance|' +
+    'estate|esq|erni|ericsson|equipment|epson|epost|enterprises|engineering|engineer|energy|emerck|' +
+    'email|education|edu|edeka|eco|eat|earth|dvr|dvag|durban|dupont|duns|dunlop|duck|dubai|dtv|drive|' +
+    'download|dot|doosan|domains|doha|dog|dodge|doctor|docs|dnp|diy|dish|discover|discount|directory|' +
+    'direct|digital|diet|diamonds|dhl|dev|design|desi|dentist|dental|democrat|delta|deloitte|dell|' +
+    'delivery|degree|deals|dealer|deal|dds|dclk|day|datsun|dating|date|data|dance|dad|dabur|cyou|' +
+    'cymru|cuisinella|csc|cruises|cruise|crs|crown|cricket|creditunion|creditcard|credit|courses|' +
+    'coupons|coupon|country|corsica|coop|cool|cookingchannel|cooking|contractors|contact|consulting|' +
+    'construction|condos|comsec|computer|compare|company|community|commbank|comcast|com|cologne|' +
+    'college|coffee|codes|coach|clubmed|club|cloud|clothing|clinique|clinic|click|cleaning|claims|' +
+    'cityeats|city|citic|citi|citadel|cisco|circle|cipriani|church|chrysler|chrome|christmas|chloe|' +
+    'chintai|cheap|chat|chase|channel|chanel|cfd|cfa|cern|ceo|center|ceb|cbs|cbre|cbn|cba|catholic|' +
+    'catering|cat|casino|cash|caseih|case|casa|cartier|cars|careers|career|care|cards|caravan|car|' +
+    'capitalone|capital|capetown|canon|cancerresearch|camp|camera|cam|calvinklein|call|cal|cafe|cab|' +
+    'bzh|buzz|buy|business|builders|build|bugatti|budapest|brussels|brother|broker|broadway|' +
+    'bridgestone|bradesco|box|boutique|bot|boston|bostik|bosch|boots|booking|book|boo|bond|bom|bofa|' +
+    'boehringer|boats|bnpparibas|bnl|bmw|bms|blue|bloomberg|blog|blockbuster|blanco|blackfriday|' +
+    'black|biz|bio|bingo|bing|bike|bid|bible|bharti|bet|bestbuy|best|berlin|bentley|beer|beauty|' +
+    'beats|bcn|bcg|bbva|bbt|bbc|bayern|bauhaus|basketball|baseball|bargains|barefoot|barclays|' +
+    'barclaycard|barcelona|bar|bank|band|bananarepublic|banamex|baidu|baby|azure|axa|aws|avianca|' +
+    'autos|auto|author|auspost|audio|audible|audi|auction|attorney|athleta|associates|asia|asda|arte|' +
+    'art|arpa|army|archi|aramco|arab|aquarelle|apple|app|apartments|aol|anz|anquan|android|analytics|' +
+    'amsterdam|amica|amfam|amex|americanfamily|americanexpress|alstom|alsace|ally|allstate|allfinanz|' +
+    'alipay|alibaba|alfaromeo|akdn|airtel|airforce|airbus|aigo|aig|agency|agakhan|africa|afl|' +
+    'afamilycompany|aetna|aero|aeg|adult|ads|adac|actor|active|aco|accountants|accountant|accenture|' +
+    'academy|abudhabi|abogado|able|abc|abbvie|abbott|abb|abarth|aarp|aaa|onion' +
+  ')(?=[^0-9a-zA-Z@]|$))'));
+  regexen.validCCTLD = regexSupplant(RegExp(
+  '(?:(?:' +
+      '한국|香港|澳門|新加坡|台灣|台湾|中國|中国|გე|ไทย|ලංකා|ഭാരതം|ಭಾರತ|భారత్|சிங்கப்பூர்|இலங்கை|இந்தியா|ଭାରତ|ભારત|ਭਾਰਤ|' +
+      'ভাৰত|ভারত|বাংলা|भारोत|भारतम्|भारत|ڀارت|پاکستان|مليسيا|مصر|قطر|فلسطين|عمان|عراق|سورية|سودان|تونس|' +
+      'بھارت|بارت|ایران|امارات|المغرب|السعودية|الجزائر|الاردن|հայ|қаз|укр|срб|рф|мон|мкд|ею|бел|бг|ελ|' +
+      'zw|zm|za|yt|ye|ws|wf|vu|vn|vi|vg|ve|vc|va|uz|uy|us|um|uk|ug|ua|tz|tw|tv|tt|tr|tp|to|tn|tm|tl|tk|' +
+      'tj|th|tg|tf|td|tc|sz|sy|sx|sv|su|st|ss|sr|so|sn|sm|sl|sk|sj|si|sh|sg|se|sd|sc|sb|sa|rw|ru|rs|ro|' +
+      're|qa|py|pw|pt|ps|pr|pn|pm|pl|pk|ph|pg|pf|pe|pa|om|nz|nu|nr|np|no|nl|ni|ng|nf|ne|nc|na|mz|my|mx|' +
+      'mw|mv|mu|mt|ms|mr|mq|mp|mo|mn|mm|ml|mk|mh|mg|mf|me|md|mc|ma|ly|lv|lu|lt|ls|lr|lk|li|lc|lb|la|kz|' +
+      'ky|kw|kr|kp|kn|km|ki|kh|kg|ke|jp|jo|jm|je|it|is|ir|iq|io|in|im|il|ie|id|hu|ht|hr|hn|hm|hk|gy|gw|' +
+      'gu|gt|gs|gr|gq|gp|gn|gm|gl|gi|gh|gg|gf|ge|gd|gb|ga|fr|fo|fm|fk|fj|fi|eu|et|es|er|eh|eg|ee|ec|dz|' +
+      'do|dm|dk|dj|de|cz|cy|cx|cw|cv|cu|cr|co|cn|cm|cl|ck|ci|ch|cg|cf|cd|cc|ca|bz|by|bw|bv|bt|bs|br|bq|' +
+      'bo|bn|bm|bl|bj|bi|bh|bg|bf|be|bd|bb|ba|az|ax|aw|au|at|as|ar|aq|ao|an|am|al|ai|ag|af|ae|ad|ac' +
+  ')(?=[^0-9a-zA-Z@]|$))'));
+  regexen.validPunycode = /(?:xn--[0-9a-z]+)/;
+  regexen.validSpecialCCTLD = /(?:(?:co|tv)(?=[^0-9a-zA-Z@]|$))/;
+  regexen.validDomain = regexSupplant(/(?:#{validSubdomain}*#{validDomainName}(?:#{validGTLD}|#{validCCTLD}|#{validPunycode}))/);
+  regexen.validPortNumber = /[0-9]+/;
+  regexen.pd = /\u002d\u058a\u05be\u1400\u1806\u2010-\u2015\u2e17\u2e1a\u2e3a\u2e40\u301c\u3030\u30a0\ufe31\ufe58\ufe63\uff0d/;
+  regexen.validGeneralUrlPathChars = regexSupplant(/[^#{spaces_group}\(\)\?]/i);
+  // Allow URL paths to contain up to two nested levels of balanced parens
+  //  1. Used in Wikipedia URLs like /Primer_(film)
+  //  2. Used in IIS sessions like /S(dfd346)/
+  //  3. Used in Rdio URLs like /track/We_Up_(Album_Version_(Edited))/
+  regexen.validUrlBalancedParens = regexSupplant(
+    '\\('                                   +
+      '(?:'                                 +
+        '#{validGeneralUrlPathChars}+'      +
+        '|'                                 +
+        // allow one nested level of balanced parentheses
+        '(?:'                               +
+          '#{validGeneralUrlPathChars}*'    +
+          '\\('                             +
+            '#{validGeneralUrlPathChars}+'  +
+          '\\)'                             +
+          '#{validGeneralUrlPathChars}*'    +
+        ')'                                 +
+      ')'                                   +
+    '\\)'
+  , 'i');
+  // Valid end-of-path chracters (so /foo. does not gobble the period).
+  // 1. Allow =&# for empty URL parameters and other URL-join artifacts
+  regexen.validUrlPathEndingChars = regexSupplant(/[^#{spaces_group}\(\)\?!\*';:=\,\.\$%\[\]#{pd}~&\|@]|(?:#{validUrlBalancedParens})/i);
+  // Allow @ in a url, but only in the middle. Catch things like http://example.com/@user/
+  regexen.validUrlPath = regexSupplant('(?:' +
+    '(?:' +
+      '#{validGeneralUrlPathChars}*' +
+        '(?:#{validUrlBalancedParens}#{validGeneralUrlPathChars}*)*' +
+        '#{validUrlPathEndingChars}'+
+      ')|(?:@#{validGeneralUrlPathChars}+\/)'+
+    ')', 'i');
+  regexen.validUrlQueryChars = /[a-z0-9!?\*'@\(\);:&=\+\$\/%#\[\]\-_\.,~|]/i;
+  regexen.validUrlQueryEndingChars = /[a-z0-9_&=#\/]/i;
+  regexen.validUrl = regexSupplant(
+    '('                                                          + // $1 URL
+      '(https?:\\/\\/)'                                          + // $2 Protocol
+      '(#{validDomain})'                                         + // $3 Domain(s)
+      '(?::(#{validPortNumber}))?'                               + // $4 Port number (optional)
+      '(\\/#{validUrlPath}*)?'                                   + // $5 URL Path
+      '(\\?#{validUrlQueryChars}*#{validUrlQueryEndingChars})?'  + // $6 Query String
+    ')'
+  , 'gi');
+  return regexen.validUrl;
+}());
diff --git a/app/javascript/mastodon/features/emoji/__tests__/emoji-test.js b/app/javascript/mastodon/features/emoji/__tests__/emoji-test.js
new file mode 100644
index 00000000000..372459c783f
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/__tests__/emoji-test.js
@@ -0,0 +1,77 @@
+import emojify from '../emoji';
+
+describe('emoji', () => {
+  describe('.emojify', () => {
+    it('ignores unknown shortcodes', () => {
+      expect(emojify(':foobarbazfake:')).toEqual(':foobarbazfake:');
+    });
+
+    it('ignores shortcodes inside of tags', () => {
+      expect(emojify('<p data-foo=":smile:"></p>')).toEqual('<p data-foo=":smile:"></p>');
+    });
+
+    it('works with unclosed tags', () => {
+      expect(emojify('hello>')).toEqual('hello>');
+      expect(emojify('<hello')).toEqual('<hello');
+    });
+
+    it('works with unclosed shortcodes', () => {
+      expect(emojify('smile:')).toEqual('smile:');
+      expect(emojify(':smile')).toEqual(':smile');
+    });
+
+    it('does unicode', () => {
+      expect(emojify('\uD83D\uDC69\u200D\uD83D\uDC69\u200D\uD83D\uDC66\u200D\uD83D\uDC66')).toEqual(
+        '<img draggable="false" class="emojione" alt="👩‍👩‍👦‍👦" title=":woman-woman-boy-boy:" src="/emoji/1f469-200d-1f469-200d-1f466-200d-1f466.svg" />');
+      expect(emojify('👨‍👩‍👧‍👧')).toEqual(
+      '<img draggable="false" class="emojione" alt="👨‍👩‍👧‍👧" title=":man-woman-girl-girl:" src="/emoji/1f468-200d-1f469-200d-1f467-200d-1f467.svg" />');
+      expect(emojify('👩‍👩‍👦')).toEqual('<img draggable="false" class="emojione" alt="👩‍👩‍👦" title=":woman-woman-boy:" src="/emoji/1f469-200d-1f469-200d-1f466.svg" />');
+      expect(emojify('\u2757')).toEqual(
+      '<img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg" />');
+    });
+
+    it('does multiple unicode', () => {
+      expect(emojify('\u2757 #\uFE0F\u20E3')).toEqual(
+        '<img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg" /> <img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg" />');
+      expect(emojify('\u2757#\uFE0F\u20E3')).toEqual(
+        '<img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg" /><img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg" />');
+      expect(emojify('\u2757 #\uFE0F\u20E3 \u2757')).toEqual(
+        '<img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg" /> <img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg" /> <img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg" />');
+      expect(emojify('foo \u2757 #\uFE0F\u20E3 bar')).toEqual(
+        'foo <img draggable="false" class="emojione" alt="❗" title=":exclamation:" src="/emoji/2757.svg" /> <img draggable="false" class="emojione" alt="#️⃣" title=":hash:" src="/emoji/23-20e3.svg" /> bar');
+    });
+
+    it('ignores unicode inside of tags', () => {
+      expect(emojify('<p data-foo="\uD83D\uDC69\uD83D\uDC69\uD83D\uDC66"></p>')).toEqual('<p data-foo="\uD83D\uDC69\uD83D\uDC69\uD83D\uDC66"></p>');
+    });
+
+    it('does multiple emoji properly (issue 5188)', () => {
+      expect(emojify('👌🌈💕')).toEqual('<img draggable="false" class="emojione" alt="👌" title=":ok_hand:" src="/emoji/1f44c.svg" /><img draggable="false" class="emojione" alt="🌈" title=":rainbow:" src="/emoji/1f308.svg" /><img draggable="false" class="emojione" alt="💕" title=":two_hearts:" src="/emoji/1f495.svg" />');
+      expect(emojify('👌 🌈 💕')).toEqual('<img draggable="false" class="emojione" alt="👌" title=":ok_hand:" src="/emoji/1f44c.svg" /> <img draggable="false" class="emojione" alt="🌈" title=":rainbow:" src="/emoji/1f308.svg" /> <img draggable="false" class="emojione" alt="💕" title=":two_hearts:" src="/emoji/1f495.svg" />');
+    });
+
+    it('does an emoji that has no shortcode', () => {
+      expect(emojify('🕉️')).toEqual('<img draggable="false" class="emojione" alt="🕉️" title="" src="/emoji/1f549.svg" />');
+    });
+
+    it('does an emoji whose filename is irregular', () => {
+      expect(emojify('↙️')).toEqual('<img draggable="false" class="emojione" alt="↙️" title=":arrow_lower_left:" src="/emoji/2199.svg" />');
+    });
+
+    it('avoid emojifying on invisible text', () => {
+      expect(emojify('<a href="http://example.com/test%F0%9F%98%84"><span class="invisible">http://</span><span class="ellipsis">example.com/te</span><span class="invisible">st😄</span></a>'))
+        .toEqual('<a href="http://example.com/test%F0%9F%98%84"><span class="invisible">http://</span><span class="ellipsis">example.com/te</span><span class="invisible">st😄</span></a>');
+      expect(emojify('<span class="invisible">:luigi:</span>', { ':luigi:': { static_url: 'luigi.exe' } }))
+        .toEqual('<span class="invisible">:luigi:</span>');
+    });
+
+    it('avoid emojifying on invisible text with nested tags', () => {
+      expect(emojify('<span class="invisible">😄<span class="foo">bar</span>😴</span>😇'))
+        .toEqual('<span class="invisible">😄<span class="foo">bar</span>😴</span><img draggable="false" class="emojione" alt="😇" title=":innocent:" src="/emoji/1f607.svg" />');
+      expect(emojify('<span class="invisible">😄<span class="invisible">😕</span>😴</span>😇'))
+        .toEqual('<span class="invisible">😄<span class="invisible">😕</span>😴</span><img draggable="false" class="emojione" alt="😇" title=":innocent:" src="/emoji/1f607.svg" />');
+      expect(emojify('<span class="invisible">😄<br/>😴</span>😇'))
+        .toEqual('<span class="invisible">😄<br/>😴</span><img draggable="false" class="emojione" alt="😇" title=":innocent:" src="/emoji/1f607.svg" />');
+    });
+  });
+});
diff --git a/app/javascript/mastodon/features/emoji/__tests__/emoji_index-test.js b/app/javascript/mastodon/features/emoji/__tests__/emoji_index-test.js
new file mode 100644
index 00000000000..53efa57434c
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/__tests__/emoji_index-test.js
@@ -0,0 +1,130 @@
+import { pick } from 'lodash';
+import { emojiIndex } from 'emoji-mart';
+import { search } from '../emoji_mart_search_light';
+
+const trimEmojis = emoji => pick(emoji, ['id', 'unified', 'native', 'custom']);
+
+describe('emoji_index', () => {
+  it('should give same result for emoji_index_light and emoji-mart', () => {
+    const expected = [
+      {
+        id: 'pineapple',
+        unified: '1f34d',
+        native: '🍍',
+      },
+    ];
+    expect(search('pineapple').map(trimEmojis)).toEqual(expected);
+    expect(emojiIndex.search('pineapple').map(trimEmojis)).toEqual(expected);
+  });
+
+  it('orders search results correctly', () => {
+    const expected = [
+      {
+        id: 'apple',
+        unified: '1f34e',
+        native: '🍎',
+      },
+      {
+        id: 'pineapple',
+        unified: '1f34d',
+        native: '🍍',
+      },
+      {
+        id: 'green_apple',
+        unified: '1f34f',
+        native: '🍏',
+      },
+      {
+        id: 'iphone',
+        unified: '1f4f1',
+        native: '📱',
+      },
+    ];
+    expect(search('apple').map(trimEmojis)).toEqual(expected);
+    expect(emojiIndex.search('apple').map(trimEmojis)).toEqual(expected);
+  });
+
+  it('handles custom emoji', () => {
+    const custom = [
+      {
+        id: 'mastodon',
+        name: 'mastodon',
+        short_names: ['mastodon'],
+        text: '',
+        emoticons: [],
+        keywords: ['mastodon'],
+        imageUrl: 'http://example.com',
+        custom: true,
+      },
+    ];
+    search('', { custom });
+    emojiIndex.search('', { custom });
+    const expected = [
+      {
+        id: 'mastodon',
+        custom: true,
+      },
+    ];
+    expect(search('masto').map(trimEmojis)).toEqual(expected);
+    expect(emojiIndex.search('masto').map(trimEmojis)).toEqual(expected);
+  });
+
+  it('should filter only emojis we care about, exclude pineapple', () => {
+    const emojisToShowFilter = unified => unified !== '1F34D';
+    expect(search('apple', { emojisToShowFilter }).map((obj) => obj.id))
+      .not.toContain('pineapple');
+    expect(emojiIndex.search('apple', { emojisToShowFilter }).map((obj) => obj.id))
+      .not.toContain('pineapple');
+  });
+
+  it('can include/exclude categories', () => {
+    expect(search('flag', { include: ['people'] })).toEqual([]);
+    expect(emojiIndex.search('flag', { include: ['people'] })).toEqual([]);
+  });
+
+  it('does an emoji whose unified name is irregular', () => {
+    const expected = [
+      {
+        'id': 'water_polo',
+        'unified': '1f93d',
+        'native': '🤽',
+      },
+      {
+        'id': 'man-playing-water-polo',
+        'unified': '1f93d-200d-2642-fe0f',
+        'native': '🤽‍♂️',
+      },
+      {
+        'id': 'woman-playing-water-polo',
+        'unified': '1f93d-200d-2640-fe0f',
+        'native': '🤽‍♀️',
+      },
+    ];
+    expect(search('polo').map(trimEmojis)).toEqual(expected);
+    expect(emojiIndex.search('polo').map(trimEmojis)).toEqual(expected);
+  });
+
+  it('can search for thinking_face', () => {
+    const expected = [
+      {
+        id: 'thinking_face',
+        unified: '1f914',
+        native: '🤔',
+      },
+    ];
+    expect(search('thinking_fac').map(trimEmojis)).toEqual(expected);
+    expect(emojiIndex.search('thinking_fac').map(trimEmojis)).toEqual(expected);
+  });
+
+  it('can search for woman-facepalming', () => {
+    const expected = [
+      {
+        id: 'woman-facepalming',
+        unified: '1f926-200d-2640-fe0f',
+        native: '🤦‍♀️',
+      },
+    ];
+    expect(search('woman-facep').map(trimEmojis)).toEqual(expected);
+    expect(emojiIndex.search('woman-facep').map(trimEmojis)).toEqual(expected);
+  });
+});
diff --git a/app/javascript/mastodon/features/emoji/emoji.js b/app/javascript/mastodon/features/emoji/emoji.js
new file mode 100644
index 00000000000..0f005dd5040
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/emoji.js
@@ -0,0 +1,95 @@
+import { autoPlayGif } from '../../initial_state';
+import unicodeMapping from './emoji_unicode_mapping_light';
+import Trie from 'substring-trie';
+
+const trie = new Trie(Object.keys(unicodeMapping));
+
+const assetHost = process.env.CDN_HOST || '';
+
+const emojify = (str, customEmojis = {}) => {
+  const tagCharsWithoutEmojis = '<&';
+  const tagCharsWithEmojis = Object.keys(customEmojis).length ? '<&:' : '<&';
+  let rtn = '', tagChars = tagCharsWithEmojis, invisible = 0;
+  for (;;) {
+    let match, i = 0, tag;
+    while (i < str.length && (tag = tagChars.indexOf(str[i])) === -1 && (invisible || !(match = trie.search(str.slice(i))))) {
+      i += str.codePointAt(i) < 65536 ? 1 : 2;
+    }
+    let rend, replacement = '';
+    if (i === str.length) {
+      break;
+    } else if (str[i] === ':') {
+      if (!(() => {
+        rend = str.indexOf(':', i + 1) + 1;
+        if (!rend) return false; // no pair of ':'
+        const lt = str.indexOf('<', i + 1);
+        if (!(lt === -1 || lt >= rend)) return false; // tag appeared before closing ':'
+        const shortname = str.slice(i, rend);
+        // now got a replacee as ':shortname:'
+        // if you want additional emoji handler, add statements below which set replacement and return true.
+        if (shortname in customEmojis) {
+          const filename = autoPlayGif ? customEmojis[shortname].url : customEmojis[shortname].static_url;
+          replacement = `<img draggable="false" class="emojione" alt="${shortname}" title="${shortname}" src="${filename}" />`;
+          return true;
+        }
+        return false;
+      })()) rend = ++i;
+    } else if (tag >= 0) { // <, &
+      rend = str.indexOf('>;'[tag], i + 1) + 1;
+      if (!rend) {
+        break;
+      }
+      if (tag === 0) {
+        if (invisible) {
+          if (str[i + 1] === '/') { // closing tag
+            if (!--invisible) {
+              tagChars = tagCharsWithEmojis;
+            }
+          } else if (str[rend - 2] !== '/') { // opening tag
+            invisible++;
+          }
+        } else {
+          if (str.startsWith('<span class="invisible">', i)) {
+            // avoid emojifying on invisible text
+            invisible = 1;
+            tagChars = tagCharsWithoutEmojis;
+          }
+        }
+      }
+      i = rend;
+    } else { // matched to unicode emoji
+      const { filename, shortCode } = unicodeMapping[match];
+      const title = shortCode ? `:${shortCode}:` : '';
+      replacement = `<img draggable="false" class="emojione" alt="${match}" title="${title}" src="${assetHost}/emoji/${filename}.svg" />`;
+      rend = i + match.length;
+    }
+    rtn += str.slice(0, i) + replacement;
+    str = str.slice(rend);
+  }
+  return rtn + str;
+};
+
+export default emojify;
+
+export const buildCustomEmojis = (customEmojis) => {
+  const emojis = [];
+
+  customEmojis.forEach(emoji => {
+    const shortcode = emoji.get('shortcode');
+    const url       = autoPlayGif ? emoji.get('url') : emoji.get('static_url');
+    const name      = shortcode.replace(':', '');
+
+    emojis.push({
+      id: name,
+      name,
+      short_names: [name],
+      text: '',
+      emoticons: [],
+      keywords: [name],
+      imageUrl: url,
+      custom: true,
+    });
+  });
+
+  return emojis;
+};
diff --git a/app/javascript/mastodon/features/emoji/emoji_compressed.js b/app/javascript/mastodon/features/emoji/emoji_compressed.js
new file mode 100644
index 00000000000..e5b834a74e5
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/emoji_compressed.js
@@ -0,0 +1,93 @@
+// @preval
+// http://www.unicode.org/Public/emoji/5.0/emoji-test.txt
+// This file contains the compressed version of the emoji data from
+// both emoji_map.json and from emoji-mart's emojiIndex and data objects.
+// It's designed to be emitted in an array format to take up less space
+// over the wire.
+
+const { unicodeToFilename } = require('./unicode_to_filename');
+const { unicodeToUnifiedName } = require('./unicode_to_unified_name');
+const emojiMap         = require('./emoji_map.json');
+const { emojiIndex } = require('emoji-mart');
+const { default: emojiMartData } = require('emoji-mart/dist/data');
+
+const excluded       = ['®', '©', '™'];
+const skins          = ['🏻', '🏼', '🏽', '🏾', '🏿'];
+const shortcodeMap   = {};
+
+const shortCodesToEmojiData = {};
+const emojisWithoutShortCodes = [];
+
+Object.keys(emojiIndex.emojis).forEach(key => {
+  shortcodeMap[emojiIndex.emojis[key].native] = emojiIndex.emojis[key].id;
+});
+
+const stripModifiers = unicode => {
+  skins.forEach(tone => {
+    unicode = unicode.replace(tone, '');
+  });
+
+  return unicode;
+};
+
+Object.keys(emojiMap).forEach(key => {
+  if (excluded.includes(key)) {
+    delete emojiMap[key];
+    return;
+  }
+
+  const normalizedKey = stripModifiers(key);
+  let shortcode       = shortcodeMap[normalizedKey];
+
+  if (!shortcode) {
+    shortcode = shortcodeMap[normalizedKey + '\uFE0F'];
+  }
+
+  const filename = emojiMap[key];
+
+  const filenameData = [key];
+
+  if (unicodeToFilename(key) !== filename) {
+    // filename can't be derived using unicodeToFilename
+    filenameData.push(filename);
+  }
+
+  if (typeof shortcode === 'undefined') {
+    emojisWithoutShortCodes.push(filenameData);
+  } else {
+    if (!Array.isArray(shortCodesToEmojiData[shortcode])) {
+      shortCodesToEmojiData[shortcode] = [[]];
+    }
+    shortCodesToEmojiData[shortcode][0].push(filenameData);
+  }
+});
+
+Object.keys(emojiIndex.emojis).forEach(key => {
+  const { native } = emojiIndex.emojis[key];
+  let { short_names, search, unified } = emojiMartData.emojis[key];
+  if (short_names[0] !== key) {
+    throw new Error('The compresser expects the first short_code to be the ' +
+      'key. It may need to be rewritten if the emoji change such that this ' +
+      'is no longer the case.');
+  }
+
+  short_names = short_names.slice(1); // first short name can be inferred from the key
+
+  const searchData = [native, short_names, search];
+  if (unicodeToUnifiedName(native) !== unified) {
+    // unified name can't be derived from unicodeToUnifiedName
+    searchData.push(unified);
+  }
+
+  shortCodesToEmojiData[key].push(searchData);
+});
+
+// JSON.parse/stringify is to emulate what @preval is doing and avoid any
+// inconsistent behavior in dev mode
+module.exports = JSON.parse(JSON.stringify([
+  shortCodesToEmojiData,
+  emojiMartData.skins,
+  emojiMartData.categories,
+  emojiMartData.short_names,
+  emojisWithoutShortCodes,
+]));
diff --git a/app/javascript/mastodon/features/emoji/emoji_map.json b/app/javascript/mastodon/features/emoji/emoji_map.json
new file mode 100644
index 00000000000..13753ba84cc
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/emoji_map.json
@@ -0,0 +1 @@
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♀️":"26f9-1f3fe-200d-2640-fe0f","⛹🏿‍♀️":"26f9-1f3ff-200d-2640-fe0f","🏋️‍♂️":"1f3cb-fe0f-200d-2642-fe0f","🏋🏻‍♂️":"1f3cb-1f3fb-200d-2642-fe0f","🏋🏼‍♂️":"1f3cb-1f3fc-200d-2642-fe0f","🏋🏽‍♂️":"1f3cb-1f3fd-200d-2642-fe0f","🏋🏾‍♂️":"1f3cb-1f3fe-200d-2642-fe0f","🏋🏿‍♂️":"1f3cb-1f3ff-200d-2642-fe0f","🏋️‍♀️":"1f3cb-fe0f-200d-2640-fe0f","🏋🏻‍♀️":"1f3cb-1f3fb-200d-2640-fe0f","🏋🏼‍♀️":"1f3cb-1f3fc-200d-2640-fe0f","🏋🏽‍♀️":"1f3cb-1f3fd-200d-2640-fe0f","🏋🏾‍♀️":"1f3cb-1f3fe-200d-2640-fe0f","🏋🏿‍♀️":"1f3cb-1f3ff-200d-2640-fe0f","🚴🏻‍♂️":"1f6b4-1f3fb-200d-2642-fe0f","🚴🏼‍♂️":"1f6b4-1f3fc-200d-2642-fe0f","🚴🏽‍♂️":"1f6b4-1f3fd-200d-2642-fe0f","🚴🏾‍♂️":"1f6b4-1f3fe-200d-2642-fe0f","🚴🏿‍♂️":"1f6b4-1f3ff-200d-2642-fe0f","🚴🏻‍♀️":"1f6b4-1f3fb-200d-2640-fe0f","🚴🏼‍♀️":"1f6b4-1f3fc-200d-2640-fe0f","🚴🏽‍♀️":"1f6b4-1f3fd-200d-2640-fe0f","🚴🏾‍♀️":"1f6b4-1f3fe-200d-2640-fe0f","🚴🏿‍♀️":"1f6b4-1f3ff-200d-2640-fe0f","🚵🏻‍♂️":"1f6b5-1f3fb-200d-2642-fe0f","🚵🏼‍♂️":"1f6b5-1f3fc-200d-2642-fe0f","🚵🏽‍♂️":"1f6b5-1f3fd-200d-2642-fe0f","🚵🏾‍♂️":"1f6b5-1f3fe-200d-2642-fe0f","🚵🏿‍♂️":"1f6b5-1f3ff-200d-2642-fe0f","🚵🏻‍♀️":"1f6b5-1f3fb-200d-2640-fe0f","🚵🏼‍♀️":"1f6b5-1f3fc-200d-2640-fe0f","🚵🏽‍♀️":"1f6b5-1f3fd-200d-2640-fe0f","🚵🏾‍♀️":"1f6b5-1f3fe-200d-2640-fe0f","🚵🏿‍♀️":"1f6b5-1f3ff-200d-2640-fe0f","🤸🏻‍♂️":"1f938-1f3fb-200d-2642-fe0f","🤸🏼‍♂️":"1f938-1f3fc-200d-2642-fe0f","🤸🏽‍♂️":"1f938-1f3fd-200d-2642-fe0f","🤸🏾‍♂️":"1f938-1f3fe-200d-2642-fe0f","🤸🏿‍♂️":"1f938-1f3ff-200d-2642-fe0f","🤸🏻‍♀️":"1f938-1f3fb-200d-2640-fe0f","🤸🏼‍♀️":"1f938-1f3fc-200d-2640-fe0f","🤸🏽‍♀️":"1f938-1f3fd-200d-2640-fe0f","🤸🏾‍♀️":"1f938-1f3fe-200d-2640-fe0f","🤸🏿‍♀️":"1f938-1f3ff-200d-2640-fe0f","🤽🏻‍♂️":"1f93d-1f3fb-200d-2642-fe0f","🤽🏼‍♂️":"1f93d-1f3fc-200d-2642-fe0f","🤽🏽‍♂️":"1f93d-1f3fd-200d-2642-fe0f","🤽🏾‍♂️":"1f93d-1f3fe-200d-2642-fe0f","🤽🏿‍♂️":"1f93d-1f3ff-200d-2642-fe0f","🤽🏻‍♀️":"1f93d-1f3fb-200d-2640-fe0f","🤽🏼‍♀️":"1f93d-1f3fc-200d-2640-fe0f","🤽🏽‍♀️":"1f93d-1f3fd-200d-2640-fe0f","🤽🏾‍♀️":"1f93d-1f3fe-200d-2640-fe0f","🤽🏿‍♀️":"1f93d-1f3ff-200d-2640-fe0f","🤾🏻‍♂️":"1f93e-1f3fb-200d-2642-fe0f","🤾🏼‍♂️":"1f93e-1f3fc-200d-2642-fe0f","🤾🏽‍♂️":"1f93e-1f3fd-200d-2642-fe0f","🤾🏾‍♂️":"1f93e-1f3fe-200d-2642-fe0f","🤾🏿‍♂️":"1f93e-1f3ff-200d-2642-fe0f","🤾🏻‍♀️":"1f93e-1f3fb-200d-2640-fe0f","🤾🏼‍♀️":"1f93e-1f3fc-200d-2640-fe0f","🤾🏽‍♀️":"1f93e-1f3fd-200d-2640-fe0f","🤾🏾‍♀️":"1f93e-1f3fe-200d-2640-fe0f","🤾🏿‍♀️":"1f93e-1f3ff-200d-2640-fe0f","🤹🏻‍♂️":"1f939-1f3fb-200d-2642-fe0f","🤹🏼‍♂️":"1f939-1f3fc-200d-2642-fe0f","🤹🏽‍♂️":"1f939-1f3fd-200d-2642-fe0f","🤹🏾‍♂️":"1f939-1f3fe-200d-2642-fe0f","🤹🏿‍♂️":"1f939-1f3ff-200d-2642-fe0f","🤹🏻‍♀️":"1f939-1f3fb-200d-2640-fe0f","🤹🏼‍♀️":"1f939-1f3fc-200d-2640-fe0f","🤹🏽‍♀️":"1f939-1f3fd-200d-2640-fe0f","🤹🏾‍♀️":"1f939-1f3fe-200d-2640-fe0f","🤹🏿‍♀️":"1f939-1f3ff-200d-2640-fe0f","👩‍❤‍👨":"1f469-200d-2764-fe0f-200d-1f468","👨‍❤‍👨":"1f468-200d-2764-fe0f-200d-1f468","👩‍❤‍👩":"1f469-200d-2764-fe0f-200d-1f469","👨‍👩‍👦":"1f468-200d-1f469-200d-1f466","👨‍👩‍👧":"1f468-200d-1f469-200d-1f467","👨‍👨‍👦":"1f468-200d-1f468-200d-1f466","👨‍👨‍👧":"1f468-200d-1f468-200d-1f467","👩‍👩‍👦":"1f469-200d-1f469-200d-1f466","👩‍👩‍👧":"1f469-200d-1f469-200d-1f467","👨‍👦‍👦":"1f468-200d-1f466-200d-1f466","👨‍👧‍👦":"1f468-200d-1f467-200d-1f466","👨‍👧‍👧":"1f468-200d-1f467-200d-1f467","👩‍👦‍👦":"1f469-200d-1f466-200d-1f466","👩‍👧‍👦":"1f469-200d-1f467-200d-1f466","👩‍👧‍👧":"1f469-200d-1f467-200d-1f467","👁️‍🗨️":"1f441-200d-1f5e8","👩‍❤️‍👨":"1f469-200d-2764-fe0f-200d-1f468","👨‍❤️‍👨":"1f468-200d-2764-fe0f-200d-1f468","👩‍❤️‍👩":"1f469-200d-2764-fe0f-200d-1f469","👩‍❤‍💋‍👨":"1f469-200d-2764-fe0f-200d-1f48b-200d-1f468","👨‍❤‍💋‍👨":"1f468-200d-2764-fe0f-200d-1f48b-200d-1f468","👩‍❤‍💋‍👩":"1f469-200d-2764-fe0f-200d-1f48b-200d-1f469","👨‍👩‍👧‍👦":"1f468-200d-1f469-200d-1f467-200d-1f466","👨‍👩‍👦‍👦":"1f468-200d-1f469-200d-1f466-200d-1f466","👨‍👩‍👧‍👧":"1f468-200d-1f469-200d-1f467-200d-1f467","👨‍👨‍👧‍👦":"1f468-200d-1f468-200d-1f467-200d-1f466","👨‍👨‍👦‍👦":"1f468-200d-1f468-200d-1f466-200d-1f466","👨‍👨‍👧‍👧":"1f468-200d-1f468-200d-1f467-200d-1f467","👩‍👩‍👧‍👦":"1f469-200d-1f469-200d-1f467-200d-1f466","👩‍👩‍👦‍👦":"1f469-200d-1f469-200d-1f466-200d-1f466","👩‍👩‍👧‍👧":"1f469-200d-1f469-200d-1f467-200d-1f467","🏴󠁧󠁢󠁥󠁮󠁧󠁿":"1f3f4-e0067-e0062-e0065-e006e-e0067-e007f","🏴󠁧󠁢󠁳󠁣󠁴󠁿":"1f3f4-e0067-e0062-e0073-e0063-e0074-e007f","🏴󠁧󠁢󠁷󠁬󠁳󠁿":"1f3f4-e0067-e0062-e0077-e006c-e0073-e007f","👩‍❤️‍💋‍👨":"1f469-200d-2764-fe0f-200d-1f48b-200d-1f468","👨‍❤️‍💋‍👨":"1f468-200d-2764-fe0f-200d-1f48b-200d-1f468","👩‍❤️‍💋‍👩":"1f469-200d-2764-fe0f-200d-1f48b-200d-1f469"}
\ No newline at end of file
diff --git a/app/javascript/mastodon/features/emoji/emoji_mart_data_light.js b/app/javascript/mastodon/features/emoji/emoji_mart_data_light.js
new file mode 100644
index 00000000000..45086fc4cc6
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/emoji_mart_data_light.js
@@ -0,0 +1,41 @@
+// The output of this module is designed to mimic emoji-mart's
+// "data" object, such that we can use it for a light version of emoji-mart's
+// emojiIndex.search functionality.
+const { unicodeToUnifiedName } = require('./unicode_to_unified_name');
+const [ shortCodesToEmojiData, skins, categories, short_names ] = require('./emoji_compressed');
+
+const emojis = {};
+
+// decompress
+Object.keys(shortCodesToEmojiData).forEach((shortCode) => {
+  let [
+    filenameData, // eslint-disable-line no-unused-vars
+    searchData,
+  ] = shortCodesToEmojiData[shortCode];
+  let [
+    native,
+    short_names,
+    search,
+    unified,
+  ] = searchData;
+
+  if (!unified) {
+    // unified name can be derived from unicodeToUnifiedName
+    unified = unicodeToUnifiedName(native);
+  }
+
+  short_names = [shortCode].concat(short_names);
+  emojis[shortCode] = {
+    native,
+    search,
+    short_names,
+    unified,
+  };
+});
+
+module.exports = {
+  emojis,
+  skins,
+  categories,
+  short_names,
+};
diff --git a/app/javascript/mastodon/features/emoji/emoji_mart_search_light.js b/app/javascript/mastodon/features/emoji/emoji_mart_search_light.js
new file mode 100644
index 00000000000..5755bf1c4c1
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/emoji_mart_search_light.js
@@ -0,0 +1,157 @@
+// This code is largely borrowed from:
+// https://github.com/missive/emoji-mart/blob/5f2ffcc/src/utils/emoji-index.js
+
+import data from './emoji_mart_data_light';
+import { getData, getSanitizedData, intersect } from './emoji_utils';
+
+let originalPool = {};
+let index = {};
+let emojisList = {};
+let emoticonsList = {};
+
+for (let emoji in data.emojis) {
+  let emojiData = data.emojis[emoji];
+  let { short_names, emoticons } = emojiData;
+  let id = short_names[0];
+
+  if (emoticons) {
+    emoticons.forEach(emoticon => {
+      if (emoticonsList[emoticon]) {
+        return;
+      }
+
+      emoticonsList[emoticon] = id;
+    });
+  }
+
+  emojisList[id] = getSanitizedData(id);
+  originalPool[id] = emojiData;
+}
+
+function addCustomToPool(custom, pool) {
+  custom.forEach((emoji) => {
+    let emojiId = emoji.id || emoji.short_names[0];
+
+    if (emojiId && !pool[emojiId]) {
+      pool[emojiId] = getData(emoji);
+      emojisList[emojiId] = getSanitizedData(emoji);
+    }
+  });
+}
+
+function search(value, { emojisToShowFilter, maxResults, include, exclude, custom = [] } = {}) {
+  addCustomToPool(custom, originalPool);
+
+  maxResults = maxResults || 75;
+  include = include || [];
+  exclude = exclude || [];
+
+  let results = null,
+    pool = originalPool;
+
+  if (value.length) {
+    if (value === '-' || value === '-1') {
+      return [emojisList['-1']];
+    }
+
+    let values = value.toLowerCase().split(/[\s|,|\-|_]+/),
+      allResults = [];
+
+    if (values.length > 2) {
+      values = [values[0], values[1]];
+    }
+
+    if (include.length || exclude.length) {
+      pool = {};
+
+      data.categories.forEach(category => {
+        let isIncluded = include && include.length ? include.indexOf(category.name.toLowerCase()) > -1 : true;
+        let isExcluded = exclude && exclude.length ? exclude.indexOf(category.name.toLowerCase()) > -1 : false;
+        if (!isIncluded || isExcluded) {
+          return;
+        }
+
+        category.emojis.forEach(emojiId => pool[emojiId] = data.emojis[emojiId]);
+      });
+
+      if (custom.length) {
+        let customIsIncluded = include && include.length ? include.indexOf('custom') > -1 : true;
+        let customIsExcluded = exclude && exclude.length ? exclude.indexOf('custom') > -1 : false;
+        if (customIsIncluded && !customIsExcluded) {
+          addCustomToPool(custom, pool);
+        }
+      }
+    }
+
+    allResults = values.map((value) => {
+      let aPool = pool,
+        aIndex = index,
+        length = 0;
+
+      for (let charIndex = 0; charIndex < value.length; charIndex++) {
+        const char = value[charIndex];
+        length++;
+
+        aIndex[char] = aIndex[char] || {};
+        aIndex = aIndex[char];
+
+        if (!aIndex.results) {
+          let scores = {};
+
+          aIndex.results = [];
+          aIndex.pool = {};
+
+          for (let id in aPool) {
+            let emoji = aPool[id],
+              { search } = emoji,
+              sub = value.substr(0, length),
+              subIndex = search.indexOf(sub);
+
+            if (subIndex !== -1) {
+              let score = subIndex + 1;
+              if (sub === id) score = 0;
+
+              aIndex.results.push(emojisList[id]);
+              aIndex.pool[id] = emoji;
+
+              scores[id] = score;
+            }
+          }
+
+          aIndex.results.sort((a, b) => {
+            let aScore = scores[a.id],
+              bScore = scores[b.id];
+
+            return aScore - bScore;
+          });
+        }
+
+        aPool = aIndex.pool;
+      }
+
+      return aIndex.results;
+    }).filter(a => a);
+
+    if (allResults.length > 1) {
+      results = intersect.apply(null, allResults);
+    } else if (allResults.length) {
+      results = allResults[0];
+    } else {
+      results = [];
+    }
+  }
+
+  if (results) {
+    if (emojisToShowFilter) {
+      results = results.filter((result) => emojisToShowFilter(data.emojis[result.id].unified));
+    }
+
+    if (results && results.length > maxResults) {
+      results = results.slice(0, maxResults);
+    }
+  }
+
+  return results;
+}
+
+export { search };
diff --git a/app/javascript/mastodon/features/emoji/emoji_picker.js b/app/javascript/mastodon/features/emoji/emoji_picker.js
new file mode 100644
index 00000000000..7e145381ea0
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/emoji_picker.js
@@ -0,0 +1,7 @@
+import Picker from 'emoji-mart/dist-es/components/picker';
+import Emoji from 'emoji-mart/dist-es/components/emoji';
+
+export {
+  Picker,
+  Emoji,
+};
diff --git a/app/javascript/mastodon/features/emoji/emoji_unicode_mapping_light.js b/app/javascript/mastodon/features/emoji/emoji_unicode_mapping_light.js
new file mode 100644
index 00000000000..918684c3109
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/emoji_unicode_mapping_light.js
@@ -0,0 +1,35 @@
+// A mapping of unicode strings to an object containing the filename
+// (i.e. the svg filename) and a shortCode intended to be shown
+// as a "title" attribute in an HTML element (aka tooltip).
+
+const [
+  shortCodesToEmojiData,
+  skins, // eslint-disable-line no-unused-vars
+  categories, // eslint-disable-line no-unused-vars
+  short_names, // eslint-disable-line no-unused-vars
+  emojisWithoutShortCodes,
+] = require('./emoji_compressed');
+const { unicodeToFilename } = require('./unicode_to_filename');
+
+// decompress
+const unicodeMapping = {};
+
+function processEmojiMapData(emojiMapData, shortCode) {
+  let [ native, filename ] = emojiMapData;
+  if (!filename) {
+    // filename name can be derived from unicodeToFilename
+    filename = unicodeToFilename(native);
+  }
+  unicodeMapping[native] = {
+    shortCode: shortCode,
+    filename: filename,
+  };
+}
+
+Object.keys(shortCodesToEmojiData).forEach((shortCode) => {
+  let [ filenameData ] = shortCodesToEmojiData[shortCode];
+  filenameData.forEach(emojiMapData => processEmojiMapData(emojiMapData, shortCode));
+});
+emojisWithoutShortCodes.forEach(emojiMapData => processEmojiMapData(emojiMapData));
+
+module.exports = unicodeMapping;
diff --git a/app/javascript/mastodon/features/emoji/emoji_utils.js b/app/javascript/mastodon/features/emoji/emoji_utils.js
new file mode 100644
index 00000000000..dbf725c1f53
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/emoji_utils.js
@@ -0,0 +1,258 @@
+// This code is largely borrowed from:
+// https://github.com/missive/emoji-mart/blob/5f2ffcc/src/utils/index.js
+
+import data from './emoji_mart_data_light';
+
+const buildSearch = (data) => {
+  const search = [];
+
+  let addToSearch = (strings, split) => {
+    if (!strings) {
+      return;
+    }
+
+    (Array.isArray(strings) ? strings : [strings]).forEach((string) => {
+      (split ? string.split(/[-|_|\s]+/) : [string]).forEach((s) => {
+        s = s.toLowerCase();
+
+        if (search.indexOf(s) === -1) {
+          search.push(s);
+        }
+      });
+    });
+  };
+
+  addToSearch(data.short_names, true);
+  addToSearch(data.name, true);
+  addToSearch(data.keywords, false);
+  addToSearch(data.emoticons, false);
+
+  return search.join(',');
+};
+
+const _String = String;
+
+const stringFromCodePoint = _String.fromCodePoint || function () {
+  let MAX_SIZE = 0x4000;
+  let codeUnits = [];
+  let highSurrogate;
+  let lowSurrogate;
+  let index = -1;
+  let length = arguments.length;
+  if (!length) {
+    return '';
+  }
+  let result = '';
+  while (++index < length) {
+    let codePoint = Number(arguments[index]);
+    if (
+      !isFinite(codePoint) ||       // `NaN`, `+Infinity`, or `-Infinity`
+      codePoint < 0 ||              // not a valid Unicode code point
+      codePoint > 0x10FFFF ||       // not a valid Unicode code point
+      Math.floor(codePoint) !== codePoint // not an integer
+    ) {
+      throw RangeError('Invalid code point: ' + codePoint);
+    }
+    if (codePoint <= 0xFFFF) { // BMP code point
+      codeUnits.push(codePoint);
+    } else { // Astral code point; split in surrogate halves
+      // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+      codePoint -= 0x10000;
+      highSurrogate = (codePoint >> 10) + 0xD800;
+      lowSurrogate = (codePoint % 0x400) + 0xDC00;
+      codeUnits.push(highSurrogate, lowSurrogate);
+    }
+    if (index + 1 === length || codeUnits.length > MAX_SIZE) {
+      result += String.fromCharCode.apply(null, codeUnits);
+      codeUnits.length = 0;
+    }
+  }
+  return result;
+};
+
+
+const _JSON = JSON;
+
+const COLONS_REGEX = /^(?:\:([^\:]+)\:)(?:\:skin-tone-(\d)\:)?$/;
+const SKINS = [
+  '1F3FA', '1F3FB', '1F3FC',
+  '1F3FD', '1F3FE', '1F3FF',
+];
+
+function unifiedToNative(unified) {
+  let unicodes = unified.split('-'),
+    codePoints = unicodes.map((u) => `0x${u}`);
+
+  return stringFromCodePoint.apply(null, codePoints);
+}
+
+function sanitize(emoji) {
+  let { name, short_names, skin_tone, skin_variations, emoticons, unified, custom, imageUrl } = emoji,
+    id = emoji.id || short_names[0],
+    colons = `:${id}:`;
+
+  if (custom) {
+    return {
+      id,
+      name,
+      colons,
+      emoticons,
+      custom,
+      imageUrl,
+    };
+  }
+
+  if (skin_tone) {
+    colons += `:skin-tone-${skin_tone}:`;
+  }
+
+  return {
+    id,
+    name,
+    colons,
+    emoticons,
+    unified: unified.toLowerCase(),
+    skin: skin_tone || (skin_variations ? 1 : null),
+    native: unifiedToNative(unified),
+  };
+}
+
+function getSanitizedData() {
+  return sanitize(getData(...arguments));
+}
+
+function getData(emoji, skin, set) {
+  let emojiData = {};
+
+  if (typeof emoji === 'string') {
+    let matches = emoji.match(COLONS_REGEX);
+
+    if (matches) {
+      emoji = matches[1];
+
+      if (matches[2]) {
+        skin = parseInt(matches[2]);
+      }
+    }
+
+    if (data.short_names.hasOwnProperty(emoji)) {
+      emoji = data.short_names[emoji];
+    }
+
+    if (data.emojis.hasOwnProperty(emoji)) {
+      emojiData = data.emojis[emoji];
+    }
+  } else if (emoji.id) {
+    if (data.short_names.hasOwnProperty(emoji.id)) {
+      emoji.id = data.short_names[emoji.id];
+    }
+
+    if (data.emojis.hasOwnProperty(emoji.id)) {
+      emojiData = data.emojis[emoji.id];
+      skin = skin || emoji.skin;
+    }
+  }
+
+  if (!Object.keys(emojiData).length) {
+    emojiData = emoji;
+    emojiData.custom = true;
+
+    if (!emojiData.search) {
+      emojiData.search = buildSearch(emoji);
+    }
+  }
+
+  emojiData.emoticons = emojiData.emoticons || [];
+  emojiData.variations = emojiData.variations || [];
+
+  if (emojiData.skin_variations && skin > 1 && set) {
+    emojiData = JSON.parse(_JSON.stringify(emojiData));
+
+    let skinKey = SKINS[skin - 1],
+      variationData = emojiData.skin_variations[skinKey];
+
+    if (!variationData.variations && emojiData.variations) {
+      delete emojiData.variations;
+    }
+
+    if (variationData[`has_img_${set}`]) {
+      emojiData.skin_tone = skin;
+
+      for (let k in variationData) {
+        let v = variationData[k];
+        emojiData[k] = v;
+      }
+    }
+  }
+
+  if (emojiData.variations && emojiData.variations.length) {
+    emojiData = JSON.parse(_JSON.stringify(emojiData));
+    emojiData.unified = emojiData.variations.shift();
+  }
+
+  return emojiData;
+}
+
+function uniq(arr) {
+  return arr.reduce((acc, item) => {
+    if (acc.indexOf(item) === -1) {
+      acc.push(item);
+    }
+    return acc;
+  }, []);
+}
+
+function intersect(a, b) {
+  const uniqA = uniq(a);
+  const uniqB = uniq(b);
+
+  return uniqA.filter(item => uniqB.indexOf(item) >= 0);
+}
+
+function deepMerge(a, b) {
+  let o = {};
+
+  for (let key in a) {
+    let originalValue = a[key],
+      value = originalValue;
+
+    if (b.hasOwnProperty(key)) {
+      value = b[key];
+    }
+
+    if (typeof value === 'object') {
+      value = deepMerge(originalValue, value);
+    }
+
+    o[key] = value;
+  }
+
+  return o;
+}
+
+// https://github.com/sonicdoe/measure-scrollbar
+function measureScrollbar() {
+  const div = document.createElement('div');
+
+  div.style.width = '100px';
+  div.style.height = '100px';
+  div.style.overflow = 'scroll';
+  div.style.position = 'absolute';
+  div.style.top = '-9999px';
+
+  document.body.appendChild(div);
+  const scrollbarWidth = div.offsetWidth - div.clientWidth;
+  document.body.removeChild(div);
+
+  return scrollbarWidth;
+}
+
+export {
+  getData,
+  getSanitizedData,
+  uniq,
+  intersect,
+  deepMerge,
+  unifiedToNative,
+  measureScrollbar,
+};
diff --git a/app/javascript/mastodon/features/emoji/unicode_to_filename.js b/app/javascript/mastodon/features/emoji/unicode_to_filename.js
new file mode 100644
index 00000000000..c75c4cd7d05
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/unicode_to_filename.js
@@ -0,0 +1,26 @@
+// taken from:
+// https://github.com/twitter/twemoji/blob/47732c7/twemoji-generator.js#L848-L866
+exports.unicodeToFilename = (str) => {
+  let result = '';
+  let charCode = 0;
+  let p = 0;
+  let i = 0;
+  while (i < str.length) {
+    charCode = str.charCodeAt(i++);
+    if (p) {
+      if (result.length > 0) {
+        result += '-';
+      }
+      result += (0x10000 + ((p - 0xD800) << 10) + (charCode - 0xDC00)).toString(16);
+      p = 0;
+    } else if (0xD800 <= charCode && charCode <= 0xDBFF) {
+      p = charCode;
+    } else {
+      if (result.length > 0) {
+        result += '-';
+      }
+      result += charCode.toString(16);
+    }
+  }
+  return result;
+};
diff --git a/app/javascript/mastodon/features/emoji/unicode_to_unified_name.js b/app/javascript/mastodon/features/emoji/unicode_to_unified_name.js
new file mode 100644
index 00000000000..808ac197efe
--- /dev/null
+++ b/app/javascript/mastodon/features/emoji/unicode_to_unified_name.js
@@ -0,0 +1,17 @@
+function padLeft(str, num) {
+  while (str.length < num) {
+    str = '0' + str;
+  }
+  return str;
+}
+
+exports.unicodeToUnifiedName = (str) => {
+  let output = '';
+  for (let i = 0; i < str.length; i += 2) {
+    if (i > 0) {
+      output += '-';
+    }
+    output += padLeft(str.codePointAt(i).toString(16).toUpperCase(), 4);
+  }
+  return output;
+};
diff --git a/app/javascript/mastodon/features/favourited_statuses/index.js b/app/javascript/mastodon/features/favourited_statuses/index.js
new file mode 100644
index 00000000000..1e1f5873c23
--- /dev/null
+++ b/app/javascript/mastodon/features/favourited_statuses/index.js
@@ -0,0 +1,94 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { fetchFavouritedStatuses, expandFavouritedStatuses } from '../../actions/favourites';
+import Column from '../ui/components/column';
+import ColumnHeader from '../../components/column_header';
+import { addColumn, removeColumn, moveColumn } from '../../actions/columns';
+import StatusList from '../../components/status_list';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const messages = defineMessages({
+  heading: { id: 'column.favourites', defaultMessage: 'Favourites' },
+});
+
+const mapStateToProps = state => ({
+  statusIds: state.getIn(['status_lists', 'favourites', 'items']),
+  hasMore: !!state.getIn(['status_lists', 'favourites', 'next']),
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class Favourites extends ImmutablePureComponent {
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    statusIds: ImmutablePropTypes.list.isRequired,
+    intl: PropTypes.object.isRequired,
+    columnId: PropTypes.string,
+    multiColumn: PropTypes.bool,
+    hasMore: PropTypes.bool,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchFavouritedStatuses());
+  }
+
+  handlePin = () => {
+    const { columnId, dispatch } = this.props;
+
+    if (columnId) {
+      dispatch(removeColumn(columnId));
+    } else {
+      dispatch(addColumn('FAVOURITES', {}));
+    }
+  }
+
+  handleMove = (dir) => {
+    const { columnId, dispatch } = this.props;
+    dispatch(moveColumn(columnId, dir));
+  }
+
+  handleHeaderClick = () => {
+    this.column.scrollTop();
+  }
+
+  setRef = c => {
+    this.column = c;
+  }
+
+  handleScrollToBottom = () => {
+    this.props.dispatch(expandFavouritedStatuses());
+  }
+
+  render () {
+    const { intl, statusIds, columnId, multiColumn, hasMore } = this.props;
+    const pinned = !!columnId;
+
+    return (
+      <Column ref={this.setRef}>
+        <ColumnHeader
+          icon='star'
+          title={intl.formatMessage(messages.heading)}
+          onPin={this.handlePin}
+          onMove={this.handleMove}
+          onClick={this.handleHeaderClick}
+          pinned={pinned}
+          multiColumn={multiColumn}
+          showBackButton
+        />
+
+        <StatusList
+          trackScroll={!pinned}
+          statusIds={statusIds}
+          scrollKey={`favourited_statuses-${columnId}`}
+          hasMore={hasMore}
+          onScrollToBottom={this.handleScrollToBottom}
+        />
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/favourites/index.js b/app/javascript/mastodon/features/favourites/index.js
new file mode 100644
index 00000000000..6f113beb431
--- /dev/null
+++ b/app/javascript/mastodon/features/favourites/index.js
@@ -0,0 +1,60 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import LoadingIndicator from '../../components/loading_indicator';
+import { fetchFavourites } from '../../actions/interactions';
+import { ScrollContainer } from 'react-router-scroll-4';
+import AccountContainer from '../../containers/account_container';
+import Column from '../ui/components/column';
+import ColumnBackButton from '../../components/column_back_button';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const mapStateToProps = (state, props) => ({
+  accountIds: state.getIn(['user_lists', 'favourited_by', props.params.statusId]),
+});
+
+@connect(mapStateToProps)
+export default class Favourites extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    accountIds: ImmutablePropTypes.list,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchFavourites(this.props.params.statusId));
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (nextProps.params.statusId !== this.props.params.statusId && nextProps.params.statusId) {
+      this.props.dispatch(fetchFavourites(nextProps.params.statusId));
+    }
+  }
+
+  render () {
+    const { accountIds } = this.props;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    return (
+      <Column>
+        <ColumnBackButton />
+
+        <ScrollContainer scrollKey='favourites'>
+          <div className='scrollable'>
+            {accountIds.map(id => <AccountContainer key={id} id={id} withNote={false} />)}
+          </div>
+        </ScrollContainer>
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/follow_requests/components/account_authorize.js b/app/javascript/mastodon/features/follow_requests/components/account_authorize.js
new file mode 100644
index 00000000000..4fc5638d957
--- /dev/null
+++ b/app/javascript/mastodon/features/follow_requests/components/account_authorize.js
@@ -0,0 +1,49 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import Permalink from '../../../components/permalink';
+import Avatar from '../../../components/avatar';
+import DisplayName from '../../../components/display_name';
+import IconButton from '../../../components/icon_button';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const messages = defineMessages({
+  authorize: { id: 'follow_request.authorize', defaultMessage: 'Authorize' },
+  reject: { id: 'follow_request.reject', defaultMessage: 'Reject' },
+});
+
+@injectIntl
+export default class AccountAuthorize extends ImmutablePureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map.isRequired,
+    onAuthorize: PropTypes.func.isRequired,
+    onReject: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  render () {
+    const { intl, account, onAuthorize, onReject } = this.props;
+    const content = { __html: account.get('note_emojified') };
+
+    return (
+      <div className='account-authorize__wrapper'>
+        <div className='account-authorize'>
+          <Permalink href={account.get('url')} to={`/accounts/${account.get('id')}`} className='detailed-status__display-name'>
+            <div className='account-authorize__avatar'><Avatar account={account} size={48} /></div>
+            <DisplayName account={account} />
+          </Permalink>
+
+          <div className='account__header__content' dangerouslySetInnerHTML={content} />
+        </div>
+
+        <div className='account--panel'>
+          <div className='account--panel__button'><IconButton title={intl.formatMessage(messages.authorize)} icon='check' onClick={onAuthorize} /></div>
+          <div className='account--panel__button'><IconButton title={intl.formatMessage(messages.reject)} icon='times' onClick={onReject} /></div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/follow_requests/containers/account_authorize_container.js b/app/javascript/mastodon/features/follow_requests/containers/account_authorize_container.js
new file mode 100644
index 00000000000..8db471f73d0
--- /dev/null
+++ b/app/javascript/mastodon/features/follow_requests/containers/account_authorize_container.js
@@ -0,0 +1,26 @@
+import { connect } from 'react-redux';
+import { makeGetAccount } from '../../../selectors';
+import AccountAuthorize from '../components/account_authorize';
+import { authorizeFollowRequest, rejectFollowRequest } from '../../../actions/accounts';
+
+const makeMapStateToProps = () => {
+  const getAccount = makeGetAccount();
+
+  const mapStateToProps = (state, props) => ({
+    account: getAccount(state, props.id),
+  });
+
+  return mapStateToProps;
+};
+
+const mapDispatchToProps = (dispatch, { id }) => ({
+  onAuthorize () {
+    dispatch(authorizeFollowRequest(id));
+  },
+
+  onReject () {
+    dispatch(rejectFollowRequest(id));
+  },
+});
+
+export default connect(makeMapStateToProps, mapDispatchToProps)(AccountAuthorize);
diff --git a/app/javascript/mastodon/features/follow_requests/index.js b/app/javascript/mastodon/features/follow_requests/index.js
new file mode 100644
index 00000000000..eae821f9250
--- /dev/null
+++ b/app/javascript/mastodon/features/follow_requests/index.js
@@ -0,0 +1,71 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import LoadingIndicator from '../../components/loading_indicator';
+import { ScrollContainer } from 'react-router-scroll-4';
+import Column from '../ui/components/column';
+import ColumnBackButtonSlim from '../../components/column_back_button_slim';
+import AccountAuthorizeContainer from './containers/account_authorize_container';
+import { fetchFollowRequests, expandFollowRequests } from '../../actions/accounts';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const messages = defineMessages({
+  heading: { id: 'column.follow_requests', defaultMessage: 'Follow requests' },
+});
+
+const mapStateToProps = state => ({
+  accountIds: state.getIn(['user_lists', 'follow_requests', 'items']),
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class FollowRequests extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    accountIds: ImmutablePropTypes.list,
+    intl: PropTypes.object.isRequired,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchFollowRequests());
+  }
+
+  handleScroll = (e) => {
+    const { scrollTop, scrollHeight, clientHeight } = e.target;
+
+    if (scrollTop === scrollHeight - clientHeight) {
+      this.props.dispatch(expandFollowRequests());
+    }
+  }
+
+  render () {
+    const { intl, accountIds } = this.props;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    return (
+      <Column icon='users' heading={intl.formatMessage(messages.heading)}>
+        <ColumnBackButtonSlim />
+
+        <ScrollContainer scrollKey='follow_requests'>
+          <div className='scrollable' onScroll={this.handleScroll}>
+            {accountIds.map(id =>
+              <AccountAuthorizeContainer key={id} id={id} />
+            )}
+          </div>
+        </ScrollContainer>
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/followers/index.js b/app/javascript/mastodon/features/followers/index.js
new file mode 100644
index 00000000000..f64ed794837
--- /dev/null
+++ b/app/javascript/mastodon/features/followers/index.js
@@ -0,0 +1,93 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import LoadingIndicator from '../../components/loading_indicator';
+import {
+  fetchAccount,
+  fetchFollowers,
+  expandFollowers,
+} from '../../actions/accounts';
+import { ScrollContainer } from 'react-router-scroll-4';
+import AccountContainer from '../../containers/account_container';
+import Column from '../ui/components/column';
+import HeaderContainer from '../account_timeline/containers/header_container';
+import LoadMore from '../../components/load_more';
+import ColumnBackButton from '../../components/column_back_button';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const mapStateToProps = (state, props) => ({
+  accountIds: state.getIn(['user_lists', 'followers', props.params.accountId, 'items']),
+  hasMore: !!state.getIn(['user_lists', 'followers', props.params.accountId, 'next']),
+});
+
+@connect(mapStateToProps)
+export default class Followers extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    accountIds: ImmutablePropTypes.list,
+    hasMore: PropTypes.bool,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchAccount(this.props.params.accountId));
+    this.props.dispatch(fetchFollowers(this.props.params.accountId));
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (nextProps.params.accountId !== this.props.params.accountId && nextProps.params.accountId) {
+      this.props.dispatch(fetchAccount(nextProps.params.accountId));
+      this.props.dispatch(fetchFollowers(nextProps.params.accountId));
+    }
+  }
+
+  handleScroll = (e) => {
+    const { scrollTop, scrollHeight, clientHeight } = e.target;
+
+    if (scrollTop === scrollHeight - clientHeight && this.props.hasMore) {
+      this.props.dispatch(expandFollowers(this.props.params.accountId));
+    }
+  }
+
+  handleLoadMore = (e) => {
+    e.preventDefault();
+    this.props.dispatch(expandFollowers(this.props.params.accountId));
+  }
+
+  render () {
+    const { accountIds, hasMore } = this.props;
+
+    let loadMore = null;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    if (hasMore) {
+      loadMore = <LoadMore onClick={this.handleLoadMore} />;
+    }
+
+    return (
+      <Column>
+        <ColumnBackButton />
+
+        <ScrollContainer scrollKey='followers'>
+          <div className='scrollable' onScroll={this.handleScroll}>
+            <div className='followers'>
+              <HeaderContainer accountId={this.props.params.accountId} />
+              {accountIds.map(id => <AccountContainer key={id} id={id} withNote={false} />)}
+              {loadMore}
+            </div>
+          </div>
+        </ScrollContainer>
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/following/index.js b/app/javascript/mastodon/features/following/index.js
new file mode 100644
index 00000000000..a0c0fac0512
--- /dev/null
+++ b/app/javascript/mastodon/features/following/index.js
@@ -0,0 +1,93 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import LoadingIndicator from '../../components/loading_indicator';
+import {
+  fetchAccount,
+  fetchFollowing,
+  expandFollowing,
+} from '../../actions/accounts';
+import { ScrollContainer } from 'react-router-scroll-4';
+import AccountContainer from '../../containers/account_container';
+import Column from '../ui/components/column';
+import HeaderContainer from '../account_timeline/containers/header_container';
+import LoadMore from '../../components/load_more';
+import ColumnBackButton from '../../components/column_back_button';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const mapStateToProps = (state, props) => ({
+  accountIds: state.getIn(['user_lists', 'following', props.params.accountId, 'items']),
+  hasMore: !!state.getIn(['user_lists', 'following', props.params.accountId, 'next']),
+});
+
+@connect(mapStateToProps)
+export default class Following extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    accountIds: ImmutablePropTypes.list,
+    hasMore: PropTypes.bool,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchAccount(this.props.params.accountId));
+    this.props.dispatch(fetchFollowing(this.props.params.accountId));
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (nextProps.params.accountId !== this.props.params.accountId && nextProps.params.accountId) {
+      this.props.dispatch(fetchAccount(nextProps.params.accountId));
+      this.props.dispatch(fetchFollowing(nextProps.params.accountId));
+    }
+  }
+
+  handleScroll = (e) => {
+    const { scrollTop, scrollHeight, clientHeight } = e.target;
+
+    if (scrollTop === scrollHeight - clientHeight && this.props.hasMore) {
+      this.props.dispatch(expandFollowing(this.props.params.accountId));
+    }
+  }
+
+  handleLoadMore = (e) => {
+    e.preventDefault();
+    this.props.dispatch(expandFollowing(this.props.params.accountId));
+  }
+
+  render () {
+    const { accountIds, hasMore } = this.props;
+
+    let loadMore = null;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    if (hasMore) {
+      loadMore = <LoadMore onClick={this.handleLoadMore} />;
+    }
+
+    return (
+      <Column>
+        <ColumnBackButton />
+
+        <ScrollContainer scrollKey='following'>
+          <div className='scrollable' onScroll={this.handleScroll}>
+            <div className='following'>
+              <HeaderContainer accountId={this.props.params.accountId} />
+              {accountIds.map(id => <AccountContainer key={id} id={id} withNote={false} />)}
+              {loadMore}
+            </div>
+          </div>
+        </ScrollContainer>
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/generic_not_found/index.js b/app/javascript/mastodon/features/generic_not_found/index.js
new file mode 100644
index 00000000000..0290be47f9a
--- /dev/null
+++ b/app/javascript/mastodon/features/generic_not_found/index.js
@@ -0,0 +1,11 @@
+import React from 'react';
+import Column from '../ui/components/column';
+import MissingIndicator from '../../components/missing_indicator';
+
+const GenericNotFound = () => (
+  <Column>
+    <MissingIndicator />
+  </Column>
+);
+
+export default GenericNotFound;
diff --git a/app/javascript/mastodon/features/getting_started/index.js b/app/javascript/mastodon/features/getting_started/index.js
new file mode 100644
index 00000000000..4b4ae694703
--- /dev/null
+++ b/app/javascript/mastodon/features/getting_started/index.js
@@ -0,0 +1,112 @@
+import React from 'react';
+import Column from '../ui/components/column';
+import ColumnLink from '../ui/components/column_link';
+import ColumnSubheading from '../ui/components/column_subheading';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { me } from '../../initial_state';
+
+const messages = defineMessages({
+  heading: { id: 'getting_started.heading', defaultMessage: 'Getting started' },
+  home_timeline: { id: 'tabs_bar.home', defaultMessage: 'Home' },
+  notifications: { id: 'tabs_bar.notifications', defaultMessage: 'Notifications' },
+  public_timeline: { id: 'navigation_bar.public_timeline', defaultMessage: 'Federated timeline' },
+  navigation_subheading: { id: 'column_subheading.navigation', defaultMessage: 'Navigation' },
+  settings_subheading: { id: 'column_subheading.settings', defaultMessage: 'Settings' },
+  community_timeline: { id: 'navigation_bar.community_timeline', defaultMessage: 'Local timeline' },
+  preferences: { id: 'navigation_bar.preferences', defaultMessage: 'Preferences' },
+  follow_requests: { id: 'navigation_bar.follow_requests', defaultMessage: 'Follow requests' },
+  sign_out: { id: 'navigation_bar.logout', defaultMessage: 'Logout' },
+  favourites: { id: 'navigation_bar.favourites', defaultMessage: 'Favourites' },
+  blocks: { id: 'navigation_bar.blocks', defaultMessage: 'Blocked users' },
+  mutes: { id: 'navigation_bar.mutes', defaultMessage: 'Muted users' },
+  info: { id: 'navigation_bar.info', defaultMessage: 'Extended information' },
+  pins: { id: 'navigation_bar.pins', defaultMessage: 'Pinned toots' },
+});
+
+const mapStateToProps = state => ({
+  myAccount: state.getIn(['accounts', me]),
+  columns: state.getIn(['settings', 'columns']),
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class GettingStarted extends ImmutablePureComponent {
+
+  static propTypes = {
+    intl: PropTypes.object.isRequired,
+    myAccount: ImmutablePropTypes.map.isRequired,
+    columns: ImmutablePropTypes.list,
+    multiColumn: PropTypes.bool,
+  };
+
+  render () {
+    const { intl, myAccount, columns, multiColumn } = this.props;
+
+    let navItems = [];
+
+    if (multiColumn) {
+      if (!columns.find(item => item.get('id') === 'HOME')) {
+        navItems.push(<ColumnLink key='0' icon='home' text={intl.formatMessage(messages.home_timeline)} to='/timelines/home' />);
+      }
+
+      if (!columns.find(item => item.get('id') === 'NOTIFICATIONS')) {
+        navItems.push(<ColumnLink key='1' icon='bell' text={intl.formatMessage(messages.notifications)} to='/notifications' />);
+      }
+
+      if (!columns.find(item => item.get('id') === 'COMMUNITY')) {
+        navItems.push(<ColumnLink key='2' icon='users' text={intl.formatMessage(messages.community_timeline)} to='/timelines/public/local' />);
+      }
+
+      if (!columns.find(item => item.get('id') === 'PUBLIC')) {
+        navItems.push(<ColumnLink key='3' icon='globe' text={intl.formatMessage(messages.public_timeline)} to='/timelines/public' />);
+      }
+    }
+
+    navItems = navItems.concat([
+      <ColumnLink key='4' icon='star' text={intl.formatMessage(messages.favourites)} to='/favourites' />,
+      <ColumnLink key='5' icon='thumb-tack' text={intl.formatMessage(messages.pins)} to='/pinned' />,
+    ]);
+
+    if (myAccount.get('locked')) {
+      navItems.push(<ColumnLink key='6' icon='users' text={intl.formatMessage(messages.follow_requests)} to='/follow_requests' />);
+    }
+
+    navItems = navItems.concat([
+      <ColumnLink key='7' icon='volume-off' text={intl.formatMessage(messages.mutes)} to='/mutes' />,
+      <ColumnLink key='8' icon='ban' text={intl.formatMessage(messages.blocks)} to='/blocks' />,
+    ]);
+
+    return (
+      <Column icon='asterisk' heading={intl.formatMessage(messages.heading)} hideHeadingOnMobile>
+        <div className='getting-started__wrapper'>
+          <ColumnSubheading text={intl.formatMessage(messages.navigation_subheading)} />
+          {navItems}
+          <ColumnSubheading text={intl.formatMessage(messages.settings_subheading)} />
+          <ColumnLink icon='book' text={intl.formatMessage(messages.info)} href='/about/more' />
+          <ColumnLink icon='cog' text={intl.formatMessage(messages.preferences)} href='/settings/preferences' />
+          <ColumnLink icon='sign-out' text={intl.formatMessage(messages.sign_out)} href='/auth/sign_out' method='delete' />
+        </div>
+
+        <div className='getting-started__footer scrollable optionally-scrollable'>
+          <div className='static-content getting-started'>
+            <p>
+              <a href='https://github.com/tootsuite/documentation/blob/master/Using-Mastodon/FAQ.md' rel='noopener' target='_blank'><FormattedMessage id='getting_started.faq' defaultMessage='FAQ' /></a> • <a href='https://github.com/tootsuite/documentation/blob/master/Using-Mastodon/User-guide.md' rel='noopener' target='_blank'><FormattedMessage id='getting_started.userguide' defaultMessage='User Guide' /></a> • <a href='https://github.com/tootsuite/documentation/blob/master/Using-Mastodon/Apps.md' rel='noopener' target='_blank'><FormattedMessage id='getting_started.appsshort' defaultMessage='Apps' /></a>
+            </p>
+            <p>
+              <FormattedMessage
+                id='getting_started.open_source_notice'
+                defaultMessage='Mastodon is open source software. You can contribute or report issues on GitHub at {github}.'
+                values={{ github: <a href='https://github.com/tootsuite/mastodon' rel='noopener' target='_blank'>tootsuite/mastodon</a> }}
+              />
+            </p>
+          </div>
+        </div>
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/hashtag_timeline/index.js b/app/javascript/mastodon/features/hashtag_timeline/index.js
new file mode 100644
index 00000000000..5fe21ce90e2
--- /dev/null
+++ b/app/javascript/mastodon/features/hashtag_timeline/index.js
@@ -0,0 +1,118 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import StatusListContainer from '../ui/containers/status_list_container';
+import Column from '../../components/column';
+import ColumnHeader from '../../components/column_header';
+import {
+  refreshHashtagTimeline,
+  expandHashtagTimeline,
+} from '../../actions/timelines';
+import { addColumn, removeColumn, moveColumn } from '../../actions/columns';
+import { FormattedMessage } from 'react-intl';
+import { connectHashtagStream } from '../../actions/streaming';
+
+const mapStateToProps = (state, props) => ({
+  hasUnread: state.getIn(['timelines', `hashtag:${props.params.id}`, 'unread']) > 0,
+});
+
+@connect(mapStateToProps)
+export default class HashtagTimeline extends React.PureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    columnId: PropTypes.string,
+    dispatch: PropTypes.func.isRequired,
+    hasUnread: PropTypes.bool,
+    multiColumn: PropTypes.bool,
+  };
+
+  handlePin = () => {
+    const { columnId, dispatch } = this.props;
+
+    if (columnId) {
+      dispatch(removeColumn(columnId));
+    } else {
+      dispatch(addColumn('HASHTAG', { id: this.props.params.id }));
+    }
+  }
+
+  handleMove = (dir) => {
+    const { columnId, dispatch } = this.props;
+    dispatch(moveColumn(columnId, dir));
+  }
+
+  handleHeaderClick = () => {
+    this.column.scrollTop();
+  }
+
+  _subscribe (dispatch, id) {
+    this.disconnect = dispatch(connectHashtagStream(id));
+  }
+
+  _unsubscribe () {
+    if (this.disconnect) {
+      this.disconnect();
+      this.disconnect = null;
+    }
+  }
+
+  componentDidMount () {
+    const { dispatch } = this.props;
+    const { id } = this.props.params;
+
+    dispatch(refreshHashtagTimeline(id));
+    this._subscribe(dispatch, id);
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (nextProps.params.id !== this.props.params.id) {
+      this.props.dispatch(refreshHashtagTimeline(nextProps.params.id));
+      this._unsubscribe();
+      this._subscribe(this.props.dispatch, nextProps.params.id);
+    }
+  }
+
+  componentWillUnmount () {
+    this._unsubscribe();
+  }
+
+  setRef = c => {
+    this.column = c;
+  }
+
+  handleLoadMore = () => {
+    this.props.dispatch(expandHashtagTimeline(this.props.params.id));
+  }
+
+  render () {
+    const { hasUnread, columnId, multiColumn } = this.props;
+    const { id } = this.props.params;
+    const pinned = !!columnId;
+
+    return (
+      <Column ref={this.setRef}>
+        <ColumnHeader
+          icon='hashtag'
+          active={hasUnread}
+          title={id}
+          onPin={this.handlePin}
+          onMove={this.handleMove}
+          onClick={this.handleHeaderClick}
+          pinned={pinned}
+          multiColumn={multiColumn}
+          showBackButton
+        />
+
+        <StatusListContainer
+          trackScroll={!pinned}
+          scrollKey={`hashtag_timeline-${columnId}`}
+          timelineId={`hashtag:${id}`}
+          loadMore={this.handleLoadMore}
+          emptyMessage={<FormattedMessage id='empty_column.hashtag' defaultMessage='There is nothing in this hashtag yet.' />}
+        />
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/home_timeline/components/column_settings.js b/app/javascript/mastodon/features/home_timeline/components/column_settings.js
new file mode 100644
index 00000000000..43172bd25b4
--- /dev/null
+++ b/app/javascript/mastodon/features/home_timeline/components/column_settings.js
@@ -0,0 +1,46 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import SettingToggle from '../../notifications/components/setting_toggle';
+import SettingText from '../../../components/setting_text';
+
+const messages = defineMessages({
+  filter_regex: { id: 'home.column_settings.filter_regex', defaultMessage: 'Filter out by regular expressions' },
+  settings: { id: 'home.settings', defaultMessage: 'Column settings' },
+});
+
+@injectIntl
+export default class ColumnSettings extends React.PureComponent {
+
+  static propTypes = {
+    settings: ImmutablePropTypes.map.isRequired,
+    onChange: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  render () {
+    const { settings, onChange, intl } = this.props;
+
+    return (
+      <div>
+        <span className='column-settings__section'><FormattedMessage id='home.column_settings.basic' defaultMessage='Basic' /></span>
+
+        <div className='column-settings__row'>
+          <SettingToggle prefix='home_timeline' settings={settings} settingKey={['shows', 'reblog']} onChange={onChange} label={<FormattedMessage id='home.column_settings.show_reblogs' defaultMessage='Show boosts' />} />
+        </div>
+
+        <div className='column-settings__row'>
+          <SettingToggle prefix='home_timeline' settings={settings} settingKey={['shows', 'reply']} onChange={onChange} label={<FormattedMessage id='home.column_settings.show_replies' defaultMessage='Show replies' />} />
+        </div>
+
+        <span className='column-settings__section'><FormattedMessage id='home.column_settings.advanced' defaultMessage='Advanced' /></span>
+
+        <div className='column-settings__row'>
+          <SettingText prefix='home_timeline' settings={settings} settingKey={['regex', 'body']} onChange={onChange} label={intl.formatMessage(messages.filter_regex)} />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/home_timeline/containers/column_settings_container.js b/app/javascript/mastodon/features/home_timeline/containers/column_settings_container.js
new file mode 100644
index 00000000000..fd8a392982a
--- /dev/null
+++ b/app/javascript/mastodon/features/home_timeline/containers/column_settings_container.js
@@ -0,0 +1,21 @@
+import { connect } from 'react-redux';
+import ColumnSettings from '../components/column_settings';
+import { changeSetting, saveSettings } from '../../../actions/settings';
+
+const mapStateToProps = state => ({
+  settings: state.getIn(['settings', 'home']),
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onChange (key, checked) {
+    dispatch(changeSetting(['home', ...key], checked));
+  },
+
+  onSave () {
+    dispatch(saveSettings());
+  },
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(ColumnSettings);
diff --git a/app/javascript/mastodon/features/home_timeline/index.js b/app/javascript/mastodon/features/home_timeline/index.js
new file mode 100644
index 00000000000..a4bc60facee
--- /dev/null
+++ b/app/javascript/mastodon/features/home_timeline/index.js
@@ -0,0 +1,90 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import { expandHomeTimeline } from '../../actions/timelines';
+import PropTypes from 'prop-types';
+import StatusListContainer from '../ui/containers/status_list_container';
+import Column from '../../components/column';
+import ColumnHeader from '../../components/column_header';
+import { addColumn, removeColumn, moveColumn } from '../../actions/columns';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import ColumnSettingsContainer from './containers/column_settings_container';
+import { Link } from 'react-router-dom';
+
+const messages = defineMessages({
+  title: { id: 'column.home', defaultMessage: 'Home' },
+});
+
+const mapStateToProps = state => ({
+  hasUnread: state.getIn(['timelines', 'home', 'unread']) > 0,
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class HomeTimeline extends React.PureComponent {
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+    hasUnread: PropTypes.bool,
+    columnId: PropTypes.string,
+    multiColumn: PropTypes.bool,
+  };
+
+  handlePin = () => {
+    const { columnId, dispatch } = this.props;
+
+    if (columnId) {
+      dispatch(removeColumn(columnId));
+    } else {
+      dispatch(addColumn('HOME', {}));
+    }
+  }
+
+  handleMove = (dir) => {
+    const { columnId, dispatch } = this.props;
+    dispatch(moveColumn(columnId, dir));
+  }
+
+  handleHeaderClick = () => {
+    this.column.scrollTop();
+  }
+
+  setRef = c => {
+    this.column = c;
+  }
+
+  handleLoadMore = () => {
+    this.props.dispatch(expandHomeTimeline());
+  }
+
+  render () {
+    const { intl, hasUnread, columnId, multiColumn } = this.props;
+    const pinned = !!columnId;
+
+    return (
+      <Column ref={this.setRef}>
+        <ColumnHeader
+          icon='home'
+          active={hasUnread}
+          title={intl.formatMessage(messages.title)}
+          onPin={this.handlePin}
+          onMove={this.handleMove}
+          onClick={this.handleHeaderClick}
+          pinned={pinned}
+          multiColumn={multiColumn}
+        >
+          <ColumnSettingsContainer />
+        </ColumnHeader>
+
+        <StatusListContainer
+          trackScroll={!pinned}
+          scrollKey={`home_timeline-${columnId}`}
+          loadMore={this.handleLoadMore}
+          timelineId='home'
+          emptyMessage={<FormattedMessage id='empty_column.home' defaultMessage='Your home timeline is empty! Visit {public} or use search to get started and meet other users.' values={{ public: <Link to='/timelines/public'><FormattedMessage id='empty_column.home.public_timeline' defaultMessage='the public timeline' /></Link> }} />}
+        />
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/mutes/index.js b/app/javascript/mastodon/features/mutes/index.js
new file mode 100644
index 00000000000..bb351ece246
--- /dev/null
+++ b/app/javascript/mastodon/features/mutes/index.js
@@ -0,0 +1,70 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import LoadingIndicator from '../../components/loading_indicator';
+import { ScrollContainer } from 'react-router-scroll-4';
+import Column from '../ui/components/column';
+import ColumnBackButtonSlim from '../../components/column_back_button_slim';
+import AccountContainer from '../../containers/account_container';
+import { fetchMutes, expandMutes } from '../../actions/mutes';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const messages = defineMessages({
+  heading: { id: 'column.mutes', defaultMessage: 'Muted users' },
+});
+
+const mapStateToProps = state => ({
+  accountIds: state.getIn(['user_lists', 'mutes', 'items']),
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class Mutes extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    accountIds: ImmutablePropTypes.list,
+    intl: PropTypes.object.isRequired,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchMutes());
+  }
+
+  handleScroll = (e) => {
+    const { scrollTop, scrollHeight, clientHeight } = e.target;
+
+    if (scrollTop === scrollHeight - clientHeight) {
+      this.props.dispatch(expandMutes());
+    }
+  }
+
+  render () {
+    const { intl, accountIds } = this.props;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    return (
+      <Column icon='volume-off' heading={intl.formatMessage(messages.heading)}>
+        <ColumnBackButtonSlim />
+        <ScrollContainer scrollKey='mutes'>
+          <div className='scrollable mutes' onScroll={this.handleScroll}>
+            {accountIds.map(id =>
+              <AccountContainer key={id} id={id} />
+            )}
+          </div>
+        </ScrollContainer>
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/notifications/components/clear_column_button.js b/app/javascript/mastodon/features/notifications/components/clear_column_button.js
new file mode 100644
index 00000000000..22a10753f55
--- /dev/null
+++ b/app/javascript/mastodon/features/notifications/components/clear_column_button.js
@@ -0,0 +1,17 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { FormattedMessage } from 'react-intl';
+
+export default class ClearColumnButton extends React.Component {
+
+  static propTypes = {
+    onClick: PropTypes.func.isRequired,
+  };
+
+  render () {
+    return (
+      <button className='text-btn column-header__setting-btn' tabIndex='0' onClick={this.props.onClick}><i className='fa fa-eraser' /> <FormattedMessage id='notifications.clear' defaultMessage='Clear notifications' /></button>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/notifications/components/column_settings.js b/app/javascript/mastodon/features/notifications/components/column_settings.js
new file mode 100644
index 00000000000..88a29d4d31e
--- /dev/null
+++ b/app/javascript/mastodon/features/notifications/components/column_settings.js
@@ -0,0 +1,86 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { FormattedMessage } from 'react-intl';
+import ClearColumnButton from './clear_column_button';
+import SettingToggle from './setting_toggle';
+
+export default class ColumnSettings extends React.PureComponent {
+
+  static propTypes = {
+    settings: ImmutablePropTypes.map.isRequired,
+    pushSettings: ImmutablePropTypes.map.isRequired,
+    onChange: PropTypes.func.isRequired,
+    onSave: PropTypes.func.isRequired,
+    onClear: PropTypes.func.isRequired,
+  };
+
+  onPushChange = (key, checked) => {
+    this.props.onChange(['push', ...key], checked);
+  }
+
+  render () {
+    const { settings, pushSettings, onChange, onClear } = this.props;
+
+    const alertStr = <FormattedMessage id='notifications.column_settings.alert' defaultMessage='Desktop notifications' />;
+    const showStr  = <FormattedMessage id='notifications.column_settings.show' defaultMessage='Show in column' />;
+    const soundStr = <FormattedMessage id='notifications.column_settings.sound' defaultMessage='Play sound' />;
+
+    const showPushSettings = pushSettings.get('browserSupport') && pushSettings.get('isSubscribed');
+    const pushStr = showPushSettings && <FormattedMessage id='notifications.column_settings.push' defaultMessage='Push notifications' />;
+    const pushMeta = showPushSettings && <FormattedMessage id='notifications.column_settings.push_meta' defaultMessage='This device' />;
+
+    return (
+      <div>
+        <div className='column-settings__row'>
+          <ClearColumnButton onClick={onClear} />
+        </div>
+
+        <div role='group' aria-labelledby='notifications-follow'>
+          <span id='notifications-follow' className='column-settings__section'><FormattedMessage id='notifications.column_settings.follow' defaultMessage='New followers:' /></span>
+
+          <div className='column-settings__row'>
+            <SettingToggle prefix='notifications_desktop' settings={settings} settingKey={['alerts', 'follow']} onChange={onChange} label={alertStr} />
+            {showPushSettings && <SettingToggle prefix='notifications_push' settings={pushSettings} settingKey={['alerts', 'follow']} meta={pushMeta} onChange={this.onPushChange} label={pushStr} />}
+            <SettingToggle prefix='notifications' settings={settings} settingKey={['shows', 'follow']} onChange={onChange} label={showStr} />
+            <SettingToggle prefix='notifications' settings={settings} settingKey={['sounds', 'follow']} onChange={onChange} label={soundStr} />
+          </div>
+        </div>
+
+        <div role='group' aria-labelledby='notifications-favourite'>
+          <span id='notifications-favourite' className='column-settings__section'><FormattedMessage id='notifications.column_settings.favourite' defaultMessage='Favourites:' /></span>
+
+          <div className='column-settings__row'>
+            <SettingToggle prefix='notifications_desktop' settings={settings} settingKey={['alerts', 'favourite']} onChange={onChange} label={alertStr} />
+            {showPushSettings && <SettingToggle prefix='notifications_push' settings={pushSettings} settingKey={['alerts', 'favourite']} meta={pushMeta} onChange={this.onPushChange} label={pushStr} />}
+            <SettingToggle prefix='notifications' settings={settings} settingKey={['shows', 'favourite']} onChange={onChange} label={showStr} />
+            <SettingToggle prefix='notifications' settings={settings} settingKey={['sounds', 'favourite']} onChange={onChange} label={soundStr} />
+          </div>
+        </div>
+
+        <div role='group' aria-labelledby='notifications-mention'>
+          <span id='notifications-mention' className='column-settings__section'><FormattedMessage id='notifications.column_settings.mention' defaultMessage='Mentions:' /></span>
+
+          <div className='column-settings__row'>
+            <SettingToggle prefix='notifications_desktop' settings={settings} settingKey={['alerts', 'mention']} onChange={onChange} label={alertStr} />
+            {showPushSettings && <SettingToggle prefix='notifications_push' settings={pushSettings} settingKey={['alerts', 'mention']} meta={pushMeta} onChange={this.onPushChange} label={pushStr} />}
+            <SettingToggle prefix='notifications' settings={settings} settingKey={['shows', 'mention']} onChange={onChange} label={showStr} />
+            <SettingToggle prefix='notifications' settings={settings} settingKey={['sounds', 'mention']} onChange={onChange} label={soundStr} />
+          </div>
+        </div>
+
+        <div role='group' aria-labelledby='notifications-reblog'>
+          <span id='notifications-reblog' className='column-settings__section'><FormattedMessage id='notifications.column_settings.reblog' defaultMessage='Boosts:' /></span>
+
+          <div className='column-settings__row'>
+            <SettingToggle prefix='notifications_desktop' settings={settings} settingKey={['alerts', 'reblog']} onChange={onChange} label={alertStr} />
+            {showPushSettings && <SettingToggle prefix='notifications_push' settings={pushSettings} settingKey={['alerts', 'reblog']} meta={pushMeta} onChange={this.onPushChange} label={pushStr} />}
+            <SettingToggle prefix='notifications' settings={settings} settingKey={['shows', 'reblog']} onChange={onChange} label={showStr} />
+            <SettingToggle prefix='notifications' settings={settings} settingKey={['sounds', 'reblog']} onChange={onChange} label={soundStr} />
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/notifications/components/notification.js b/app/javascript/mastodon/features/notifications/components/notification.js
new file mode 100644
index 00000000000..9d170cad532
--- /dev/null
+++ b/app/javascript/mastodon/features/notifications/components/notification.js
@@ -0,0 +1,152 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import StatusContainer from '../../../containers/status_container';
+import AccountContainer from '../../../containers/account_container';
+import { FormattedMessage } from 'react-intl';
+import Permalink from '../../../components/permalink';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { HotKeys } from 'react-hotkeys';
+
+export default class Notification extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    notification: ImmutablePropTypes.map.isRequired,
+    hidden: PropTypes.bool,
+    onMoveUp: PropTypes.func.isRequired,
+    onMoveDown: PropTypes.func.isRequired,
+    onMention: PropTypes.func.isRequired,
+  };
+
+  handleMoveUp = () => {
+    const { notification, onMoveUp } = this.props;
+    onMoveUp(notification.get('id'));
+  }
+
+  handleMoveDown = () => {
+    const { notification, onMoveDown } = this.props;
+    onMoveDown(notification.get('id'));
+  }
+
+  handleOpen = () => {
+    const { notification } = this.props;
+
+    if (notification.get('status')) {
+      this.context.router.history.push(`/statuses/${notification.get('status')}`);
+    } else {
+      this.handleOpenProfile();
+    }
+  }
+
+  handleOpenProfile = () => {
+    const { notification } = this.props;
+    this.context.router.history.push(`/accounts/${notification.getIn(['account', 'id'])}`);
+  }
+
+  handleMention = e => {
+    e.preventDefault();
+
+    const { notification, onMention } = this.props;
+    onMention(notification.get('account'), this.context.router.history);
+  }
+
+  getHandlers () {
+    return {
+      moveUp: this.handleMoveUp,
+      moveDown: this.handleMoveDown,
+      open: this.handleOpen,
+      openProfile: this.handleOpenProfile,
+      mention: this.handleMention,
+      reply: this.handleMention,
+    };
+  }
+
+  renderFollow (account, link) {
+    return (
+      <HotKeys handlers={this.getHandlers()}>
+        <div className='notification notification-follow focusable' tabIndex='0'>
+          <div className='notification__message'>
+            <div className='notification__favourite-icon-wrapper'>
+              <i className='fa fa-fw fa-user-plus' />
+            </div>
+
+            <FormattedMessage id='notification.follow' defaultMessage='{name} followed you' values={{ name: link }} />
+          </div>
+
+          <AccountContainer id={account.get('id')} withNote={false} hidden={this.props.hidden} />
+        </div>
+      </HotKeys>
+    );
+  }
+
+  renderMention (notification) {
+    return (
+      <StatusContainer
+        id={notification.get('status')}
+        withDismiss
+        hidden={this.props.hidden}
+        onMoveDown={this.handleMoveDown}
+        onMoveUp={this.handleMoveUp}
+      />
+    );
+  }
+
+  renderFavourite (notification, link) {
+    return (
+      <HotKeys handlers={this.getHandlers()}>
+        <div className='notification notification-favourite focusable' tabIndex='0'>
+          <div className='notification__message'>
+            <div className='notification__favourite-icon-wrapper'>
+              <i className='fa fa-fw fa-star star-icon' />
+            </div>
+            <FormattedMessage id='notification.favourite' defaultMessage='{name} favourited your status' values={{ name: link }} />
+          </div>
+
+          <StatusContainer id={notification.get('status')} account={notification.get('account')} muted withDismiss hidden={!!this.props.hidden} />
+        </div>
+      </HotKeys>
+    );
+  }
+
+  renderReblog (notification, link) {
+    return (
+      <HotKeys handlers={this.getHandlers()}>
+        <div className='notification notification-reblog focusable' tabIndex='0'>
+          <div className='notification__message'>
+            <div className='notification__favourite-icon-wrapper'>
+              <i className='fa fa-fw fa-retweet' />
+            </div>
+            <FormattedMessage id='notification.reblog' defaultMessage='{name} boosted your status' values={{ name: link }} />
+          </div>
+
+          <StatusContainer id={notification.get('status')} account={notification.get('account')} muted withDismiss hidden={this.props.hidden} />
+        </div>
+      </HotKeys>
+    );
+  }
+
+  render () {
+    const { notification } = this.props;
+    const account          = notification.get('account');
+    const displayNameHtml  = { __html: account.get('display_name_html') };
+    const link             = <Permalink className='notification__display-name' href={account.get('url')} title={account.get('acct')} to={`/accounts/${account.get('id')}`} dangerouslySetInnerHTML={displayNameHtml} />;
+
+    switch(notification.get('type')) {
+    case 'follow':
+      return this.renderFollow(account, link);
+    case 'mention':
+      return this.renderMention(notification);
+    case 'favourite':
+      return this.renderFavourite(notification, link);
+    case 'reblog':
+      return this.renderReblog(notification, link);
+    }
+
+    return null;
+  }
+
+}
diff --git a/app/javascript/mastodon/features/notifications/components/setting_toggle.js b/app/javascript/mastodon/features/notifications/components/setting_toggle.js
new file mode 100644
index 00000000000..281359d2a26
--- /dev/null
+++ b/app/javascript/mastodon/features/notifications/components/setting_toggle.js
@@ -0,0 +1,34 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import Toggle from 'react-toggle';
+
+export default class SettingToggle extends React.PureComponent {
+
+  static propTypes = {
+    prefix: PropTypes.string,
+    settings: ImmutablePropTypes.map.isRequired,
+    settingKey: PropTypes.array.isRequired,
+    label: PropTypes.node.isRequired,
+    meta: PropTypes.node,
+    onChange: PropTypes.func.isRequired,
+  }
+
+  onChange = ({ target }) => {
+    this.props.onChange(this.props.settingKey, target.checked);
+  }
+
+  render () {
+    const { prefix, settings, settingKey, label, meta } = this.props;
+    const id = ['setting-toggle', prefix, ...settingKey].filter(Boolean).join('-');
+
+    return (
+      <div className='setting-toggle'>
+        <Toggle id={id} checked={settings.getIn(settingKey)} onChange={this.onChange} onKeyDown={this.onKeyDown} />
+        <label htmlFor={id} className='setting-toggle__label'>{label}</label>
+        {meta && <span className='setting-meta__label'>{meta}</span>}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/notifications/containers/column_settings_container.js b/app/javascript/mastodon/features/notifications/containers/column_settings_container.js
new file mode 100644
index 00000000000..d4ead7881b5
--- /dev/null
+++ b/app/javascript/mastodon/features/notifications/containers/column_settings_container.js
@@ -0,0 +1,44 @@
+import { connect } from 'react-redux';
+import { defineMessages, injectIntl } from 'react-intl';
+import ColumnSettings from '../components/column_settings';
+import { changeSetting, saveSettings } from '../../../actions/settings';
+import { clearNotifications } from '../../../actions/notifications';
+import { changeAlerts as changePushNotifications, saveSettings as savePushNotificationSettings } from '../../../actions/push_notifications';
+import { openModal } from '../../../actions/modal';
+
+const messages = defineMessages({
+  clearMessage: { id: 'notifications.clear_confirmation', defaultMessage: 'Are you sure you want to permanently clear all your notifications?' },
+  clearConfirm: { id: 'notifications.clear', defaultMessage: 'Clear notifications' },
+});
+
+const mapStateToProps = state => ({
+  settings: state.getIn(['settings', 'notifications']),
+  pushSettings: state.get('push_notifications'),
+});
+
+const mapDispatchToProps = (dispatch, { intl }) => ({
+
+  onChange (key, checked) {
+    if (key[0] === 'push') {
+      dispatch(changePushNotifications(key.slice(1), checked));
+    } else {
+      dispatch(changeSetting(['notifications', ...key], checked));
+    }
+  },
+
+  onSave () {
+    dispatch(saveSettings());
+    dispatch(savePushNotificationSettings());
+  },
+
+  onClear () {
+    dispatch(openModal('CONFIRM', {
+      message: intl.formatMessage(messages.clearMessage),
+      confirm: intl.formatMessage(messages.clearConfirm),
+      onConfirm: () => dispatch(clearNotifications()),
+    }));
+  },
+
+});
+
+export default injectIntl(connect(mapStateToProps, mapDispatchToProps)(ColumnSettings));
diff --git a/app/javascript/mastodon/features/notifications/containers/notification_container.js b/app/javascript/mastodon/features/notifications/containers/notification_container.js
new file mode 100644
index 00000000000..921aa460f52
--- /dev/null
+++ b/app/javascript/mastodon/features/notifications/containers/notification_container.js
@@ -0,0 +1,22 @@
+import { connect } from 'react-redux';
+import { makeGetNotification } from '../../../selectors';
+import Notification from '../components/notification';
+import { mentionCompose } from '../../../actions/compose';
+
+const makeMapStateToProps = () => {
+  const getNotification = makeGetNotification();
+
+  const mapStateToProps = (state, props) => ({
+    notification: getNotification(state, props.notification, props.accountId),
+  });
+
+  return mapStateToProps;
+};
+
+const mapDispatchToProps = dispatch => ({
+  onMention: (account, router) => {
+    dispatch(mentionCompose(account, router));
+  },
+});
+
+export default connect(makeMapStateToProps, mapDispatchToProps)(Notification);
diff --git a/app/javascript/mastodon/features/notifications/index.js b/app/javascript/mastodon/features/notifications/index.js
new file mode 100644
index 00000000000..35b430bfb51
--- /dev/null
+++ b/app/javascript/mastodon/features/notifications/index.js
@@ -0,0 +1,168 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import Column from '../../components/column';
+import ColumnHeader from '../../components/column_header';
+import { expandNotifications, scrollTopNotifications } from '../../actions/notifications';
+import { addColumn, removeColumn, moveColumn } from '../../actions/columns';
+import NotificationContainer from './containers/notification_container';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import ColumnSettingsContainer from './containers/column_settings_container';
+import { createSelector } from 'reselect';
+import { List as ImmutableList } from 'immutable';
+import { debounce } from 'lodash';
+import ScrollableList from '../../components/scrollable_list';
+
+const messages = defineMessages({
+  title: { id: 'column.notifications', defaultMessage: 'Notifications' },
+});
+
+const getNotifications = createSelector([
+  state => ImmutableList(state.getIn(['settings', 'notifications', 'shows']).filter(item => !item).keys()),
+  state => state.getIn(['notifications', 'items']),
+], (excludedTypes, notifications) => notifications.filterNot(item => excludedTypes.includes(item.get('type'))));
+
+const mapStateToProps = state => ({
+  notifications: getNotifications(state),
+  isLoading: state.getIn(['notifications', 'isLoading'], true),
+  isUnread: state.getIn(['notifications', 'unread']) > 0,
+  hasMore: !!state.getIn(['notifications', 'next']),
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class Notifications extends React.PureComponent {
+
+  static propTypes = {
+    columnId: PropTypes.string,
+    notifications: ImmutablePropTypes.list.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    shouldUpdateScroll: PropTypes.func,
+    intl: PropTypes.object.isRequired,
+    isLoading: PropTypes.bool,
+    isUnread: PropTypes.bool,
+    multiColumn: PropTypes.bool,
+    hasMore: PropTypes.bool,
+  };
+
+  static defaultProps = {
+    trackScroll: true,
+  };
+
+  handleScrollToBottom = debounce(() => {
+    this.props.dispatch(scrollTopNotifications(false));
+    this.props.dispatch(expandNotifications());
+  }, 300, { leading: true });
+
+  handleScrollToTop = debounce(() => {
+    this.props.dispatch(scrollTopNotifications(true));
+  }, 100);
+
+  handleScroll = debounce(() => {
+    this.props.dispatch(scrollTopNotifications(false));
+  }, 100);
+
+  handlePin = () => {
+    const { columnId, dispatch } = this.props;
+
+    if (columnId) {
+      dispatch(removeColumn(columnId));
+    } else {
+      dispatch(addColumn('NOTIFICATIONS', {}));
+    }
+  }
+
+  handleMove = (dir) => {
+    const { columnId, dispatch } = this.props;
+    dispatch(moveColumn(columnId, dir));
+  }
+
+  handleHeaderClick = () => {
+    this.column.scrollTop();
+  }
+
+  setColumnRef = c => {
+    this.column = c;
+  }
+
+  handleMoveUp = id => {
+    const elementIndex = this.props.notifications.findIndex(item => item.get('id') === id) - 1;
+    this._selectChild(elementIndex);
+  }
+
+  handleMoveDown = id => {
+    const elementIndex = this.props.notifications.findIndex(item => item.get('id') === id) + 1;
+    this._selectChild(elementIndex);
+  }
+
+  _selectChild (index) {
+    const element = this.column.node.querySelector(`article:nth-of-type(${index + 1}) .focusable`);
+
+    if (element) {
+      element.focus();
+    }
+  }
+
+  render () {
+    const { intl, notifications, shouldUpdateScroll, isLoading, isUnread, columnId, multiColumn, hasMore } = this.props;
+    const pinned = !!columnId;
+    const emptyMessage = <FormattedMessage id='empty_column.notifications' defaultMessage="You don't have any notifications yet. Interact with others to start the conversation." />;
+
+    let scrollableContent = null;
+
+    if (isLoading && this.scrollableContent) {
+      scrollableContent = this.scrollableContent;
+    } else if (notifications.size > 0 || hasMore) {
+      scrollableContent = notifications.map((item) => (
+        <NotificationContainer
+          key={item.get('id')}
+          notification={item}
+          accountId={item.get('account')}
+          onMoveUp={this.handleMoveUp}
+          onMoveDown={this.handleMoveDown}
+        />
+      ));
+    } else {
+      scrollableContent = null;
+    }
+
+    this.scrollableContent = scrollableContent;
+
+    const scrollContainer = (
+      <ScrollableList
+        scrollKey={`notifications-${columnId}`}
+        trackScroll={!pinned}
+        isLoading={isLoading}
+        hasMore={hasMore}
+        emptyMessage={emptyMessage}
+        onScrollToBottom={this.handleScrollToBottom}
+        onScrollToTop={this.handleScrollToTop}
+        onScroll={this.handleScroll}
+        shouldUpdateScroll={shouldUpdateScroll}
+      >
+        {scrollableContent}
+      </ScrollableList>
+    );
+
+    return (
+      <Column ref={this.setColumnRef}>
+        <ColumnHeader
+          icon='bell'
+          active={isUnread}
+          title={intl.formatMessage(messages.title)}
+          onPin={this.handlePin}
+          onMove={this.handleMove}
+          onClick={this.handleHeaderClick}
+          pinned={pinned}
+          multiColumn={multiColumn}
+        >
+          <ColumnSettingsContainer />
+        </ColumnHeader>
+
+        {scrollContainer}
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/pinned_statuses/index.js b/app/javascript/mastodon/features/pinned_statuses/index.js
new file mode 100644
index 00000000000..b4a6c1e527d
--- /dev/null
+++ b/app/javascript/mastodon/features/pinned_statuses/index.js
@@ -0,0 +1,59 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { fetchPinnedStatuses } from '../../actions/pin_statuses';
+import Column from '../ui/components/column';
+import ColumnBackButtonSlim from '../../components/column_back_button_slim';
+import StatusList from '../../components/status_list';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const messages = defineMessages({
+  heading: { id: 'column.pins', defaultMessage: 'Pinned toot' },
+});
+
+const mapStateToProps = state => ({
+  statusIds: state.getIn(['status_lists', 'pins', 'items']),
+  hasMore: !!state.getIn(['status_lists', 'pins', 'next']),
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class PinnedStatuses extends ImmutablePureComponent {
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    statusIds: ImmutablePropTypes.list.isRequired,
+    intl: PropTypes.object.isRequired,
+    hasMore: PropTypes.bool.isRequired,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchPinnedStatuses());
+  }
+
+  handleHeaderClick = () => {
+    this.column.scrollTop();
+  }
+
+  setRef = c => {
+    this.column = c;
+  }
+
+  render () {
+    const { intl, statusIds, hasMore } = this.props;
+
+    return (
+      <Column icon='thumb-tack' heading={intl.formatMessage(messages.heading)} ref={this.setRef}>
+        <ColumnBackButtonSlim />
+        <StatusList
+          statusIds={statusIds}
+          scrollKey='pinned_statuses'
+          hasMore={hasMore}
+        />
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/public_timeline/containers/column_settings_container.js b/app/javascript/mastodon/features/public_timeline/containers/column_settings_container.js
new file mode 100644
index 00000000000..203e1da926f
--- /dev/null
+++ b/app/javascript/mastodon/features/public_timeline/containers/column_settings_container.js
@@ -0,0 +1,17 @@
+import { connect } from 'react-redux';
+import ColumnSettings from '../../community_timeline/components/column_settings';
+import { changeSetting } from '../../../actions/settings';
+
+const mapStateToProps = state => ({
+  settings: state.getIn(['settings', 'public']),
+});
+
+const mapDispatchToProps = dispatch => ({
+
+  onChange (key, checked) {
+    dispatch(changeSetting(['public', ...key], checked));
+  },
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(ColumnSettings);
diff --git a/app/javascript/mastodon/features/public_timeline/index.js b/app/javascript/mastodon/features/public_timeline/index.js
new file mode 100644
index 00000000000..193489c6305
--- /dev/null
+++ b/app/javascript/mastodon/features/public_timeline/index.js
@@ -0,0 +1,107 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import StatusListContainer from '../ui/containers/status_list_container';
+import Column from '../../components/column';
+import ColumnHeader from '../../components/column_header';
+import {
+  refreshPublicTimeline,
+  expandPublicTimeline,
+} from '../../actions/timelines';
+import { addColumn, removeColumn, moveColumn } from '../../actions/columns';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import ColumnSettingsContainer from './containers/column_settings_container';
+import { connectPublicStream } from '../../actions/streaming';
+
+const messages = defineMessages({
+  title: { id: 'column.public', defaultMessage: 'Federated timeline' },
+});
+
+const mapStateToProps = state => ({
+  hasUnread: state.getIn(['timelines', 'public', 'unread']) > 0,
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class PublicTimeline extends React.PureComponent {
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+    columnId: PropTypes.string,
+    multiColumn: PropTypes.bool,
+    hasUnread: PropTypes.bool,
+  };
+
+  handlePin = () => {
+    const { columnId, dispatch } = this.props;
+
+    if (columnId) {
+      dispatch(removeColumn(columnId));
+    } else {
+      dispatch(addColumn('PUBLIC', {}));
+    }
+  }
+
+  handleMove = (dir) => {
+    const { columnId, dispatch } = this.props;
+    dispatch(moveColumn(columnId, dir));
+  }
+
+  handleHeaderClick = () => {
+    this.column.scrollTop();
+  }
+
+  componentDidMount () {
+    const { dispatch } = this.props;
+
+    dispatch(refreshPublicTimeline());
+    this.disconnect = dispatch(connectPublicStream());
+  }
+
+  componentWillUnmount () {
+    if (this.disconnect) {
+      this.disconnect();
+      this.disconnect = null;
+    }
+  }
+
+  setRef = c => {
+    this.column = c;
+  }
+
+  handleLoadMore = () => {
+    this.props.dispatch(expandPublicTimeline());
+  }
+
+  render () {
+    const { intl, columnId, hasUnread, multiColumn } = this.props;
+    const pinned = !!columnId;
+
+    return (
+      <Column ref={this.setRef}>
+        <ColumnHeader
+          icon='globe'
+          active={hasUnread}
+          title={intl.formatMessage(messages.title)}
+          onPin={this.handlePin}
+          onMove={this.handleMove}
+          onClick={this.handleHeaderClick}
+          pinned={pinned}
+          multiColumn={multiColumn}
+        >
+          <ColumnSettingsContainer />
+        </ColumnHeader>
+
+        <StatusListContainer
+          timelineId='public'
+          loadMore={this.handleLoadMore}
+          trackScroll={!pinned}
+          scrollKey={`public_timeline-${columnId}`}
+          emptyMessage={<FormattedMessage id='empty_column.public' defaultMessage='There is nothing here! Write something publicly, or manually follow users from other instances to fill it up' />}
+        />
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/reblogs/index.js b/app/javascript/mastodon/features/reblogs/index.js
new file mode 100644
index 00000000000..579d6aaa023
--- /dev/null
+++ b/app/javascript/mastodon/features/reblogs/index.js
@@ -0,0 +1,60 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import LoadingIndicator from '../../components/loading_indicator';
+import { fetchReblogs } from '../../actions/interactions';
+import { ScrollContainer } from 'react-router-scroll-4';
+import AccountContainer from '../../containers/account_container';
+import Column from '../ui/components/column';
+import ColumnBackButton from '../../components/column_back_button';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const mapStateToProps = (state, props) => ({
+  accountIds: state.getIn(['user_lists', 'reblogged_by', props.params.statusId]),
+});
+
+@connect(mapStateToProps)
+export default class Reblogs extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    accountIds: ImmutablePropTypes.list,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchReblogs(this.props.params.statusId));
+  }
+
+  componentWillReceiveProps(nextProps) {
+    if (nextProps.params.statusId !== this.props.params.statusId && nextProps.params.statusId) {
+      this.props.dispatch(fetchReblogs(nextProps.params.statusId));
+    }
+  }
+
+  render () {
+    const { accountIds } = this.props;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    return (
+      <Column>
+        <ColumnBackButton />
+
+        <ScrollContainer scrollKey='reblogs'>
+          <div className='scrollable reblogs'>
+            {accountIds.map(id => <AccountContainer key={id} id={id} withNote={false} />)}
+          </div>
+        </ScrollContainer>
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/report/components/status_check_box.js b/app/javascript/mastodon/features/report/components/status_check_box.js
new file mode 100644
index 00000000000..cc92322011a
--- /dev/null
+++ b/app/javascript/mastodon/features/report/components/status_check_box.js
@@ -0,0 +1,37 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import Toggle from 'react-toggle';
+
+export default class StatusCheckBox extends React.PureComponent {
+
+  static propTypes = {
+    status: ImmutablePropTypes.map.isRequired,
+    checked: PropTypes.bool,
+    onToggle: PropTypes.func.isRequired,
+    disabled: PropTypes.bool,
+  };
+
+  render () {
+    const { status, checked, onToggle, disabled } = this.props;
+    const content = { __html: status.get('contentHtml') };
+
+    if (status.get('reblog')) {
+      return null;
+    }
+
+    return (
+      <div className='status-check-box'>
+        <div
+          className='status__content'
+          dangerouslySetInnerHTML={content}
+        />
+
+        <div className='status-check-box-toggle'>
+          <Toggle checked={checked} onChange={onToggle} disabled={disabled} />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/report/containers/status_check_box_container.js b/app/javascript/mastodon/features/report/containers/status_check_box_container.js
new file mode 100644
index 00000000000..48cd0319bdf
--- /dev/null
+++ b/app/javascript/mastodon/features/report/containers/status_check_box_container.js
@@ -0,0 +1,19 @@
+import { connect } from 'react-redux';
+import StatusCheckBox from '../components/status_check_box';
+import { toggleStatusReport } from '../../../actions/reports';
+import { Set as ImmutableSet } from 'immutable';
+
+const mapStateToProps = (state, { id }) => ({
+  status: state.getIn(['statuses', id]),
+  checked: state.getIn(['reports', 'new', 'status_ids'], ImmutableSet()).includes(id),
+});
+
+const mapDispatchToProps = (dispatch, { id }) => ({
+
+  onToggle (e) {
+    dispatch(toggleStatusReport(id, e.target.checked));
+  },
+
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(StatusCheckBox);
diff --git a/app/javascript/mastodon/features/standalone/compose/index.js b/app/javascript/mastodon/features/standalone/compose/index.js
new file mode 100644
index 00000000000..0d764575fd7
--- /dev/null
+++ b/app/javascript/mastodon/features/standalone/compose/index.js
@@ -0,0 +1,20 @@
+import React from 'react';
+import ComposeFormContainer from '../../compose/containers/compose_form_container';
+import NotificationsContainer from '../../ui/containers/notifications_container';
+import LoadingBarContainer from '../../ui/containers/loading_bar_container';
+import ModalContainer from '../../ui/containers/modal_container';
+
+export default class Compose extends React.PureComponent {
+
+  render () {
+    return (
+      <div>
+        <ComposeFormContainer />
+        <NotificationsContainer />
+        <ModalContainer />
+        <LoadingBarContainer className='loading-bar' />
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/standalone/hashtag_timeline/index.js b/app/javascript/mastodon/features/standalone/hashtag_timeline/index.js
new file mode 100644
index 00000000000..f15fbb2f402
--- /dev/null
+++ b/app/javascript/mastodon/features/standalone/hashtag_timeline/index.js
@@ -0,0 +1,70 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import StatusListContainer from '../../ui/containers/status_list_container';
+import {
+  refreshHashtagTimeline,
+  expandHashtagTimeline,
+} from '../../../actions/timelines';
+import Column from '../../../components/column';
+import ColumnHeader from '../../../components/column_header';
+
+@connect()
+export default class HashtagTimeline extends React.PureComponent {
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    hashtag: PropTypes.string.isRequired,
+  };
+
+  handleHeaderClick = () => {
+    this.column.scrollTop();
+  }
+
+  setRef = c => {
+    this.column = c;
+  }
+
+  componentDidMount () {
+    const { dispatch, hashtag } = this.props;
+
+    dispatch(refreshHashtagTimeline(hashtag));
+
+    this.polling = setInterval(() => {
+      dispatch(refreshHashtagTimeline(hashtag));
+    }, 10000);
+  }
+
+  componentWillUnmount () {
+    if (typeof this.polling !== 'undefined') {
+      clearInterval(this.polling);
+      this.polling = null;
+    }
+  }
+
+  handleLoadMore = () => {
+    this.props.dispatch(expandHashtagTimeline(this.props.hashtag));
+  }
+
+  render () {
+    const { hashtag } = this.props;
+
+    return (
+      <Column ref={this.setRef}>
+        <ColumnHeader
+          icon='hashtag'
+          title={hashtag}
+          onClick={this.handleHeaderClick}
+        />
+
+        <StatusListContainer
+          trackScroll={false}
+          scrollKey='standalone_hashtag_timeline'
+          timelineId={`hashtag:${hashtag}`}
+          loadMore={this.handleLoadMore}
+        />
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/standalone/public_timeline/index.js b/app/javascript/mastodon/features/standalone/public_timeline/index.js
new file mode 100644
index 00000000000..de4b5320a5a
--- /dev/null
+++ b/app/javascript/mastodon/features/standalone/public_timeline/index.js
@@ -0,0 +1,76 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import StatusListContainer from '../../ui/containers/status_list_container';
+import {
+  refreshPublicTimeline,
+  expandPublicTimeline,
+} from '../../../actions/timelines';
+import Column from '../../../components/column';
+import ColumnHeader from '../../../components/column_header';
+import { defineMessages, injectIntl } from 'react-intl';
+
+const messages = defineMessages({
+  title: { id: 'standalone.public_title', defaultMessage: 'A look inside...' },
+});
+
+@connect()
+@injectIntl
+export default class PublicTimeline extends React.PureComponent {
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  handleHeaderClick = () => {
+    this.column.scrollTop();
+  }
+
+  setRef = c => {
+    this.column = c;
+  }
+
+  componentDidMount () {
+    const { dispatch } = this.props;
+
+    dispatch(refreshPublicTimeline());
+
+    this.polling = setInterval(() => {
+      dispatch(refreshPublicTimeline());
+    }, 3000);
+  }
+
+  componentWillUnmount () {
+    if (typeof this.polling !== 'undefined') {
+      clearInterval(this.polling);
+      this.polling = null;
+    }
+  }
+
+  handleLoadMore = () => {
+    this.props.dispatch(expandPublicTimeline());
+  }
+
+  render () {
+    const { intl } = this.props;
+
+    return (
+      <Column ref={this.setRef}>
+        <ColumnHeader
+          icon='globe'
+          title={intl.formatMessage(messages.title)}
+          onClick={this.handleHeaderClick}
+        />
+
+        <StatusListContainer
+          timelineId='public'
+          loadMore={this.handleLoadMore}
+          scrollKey='standalone_public_timeline'
+          trackScroll={false}
+        />
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/status/components/action_bar.js b/app/javascript/mastodon/features/status/components/action_bar.js
new file mode 100644
index 00000000000..7b65420d046
--- /dev/null
+++ b/app/javascript/mastodon/features/status/components/action_bar.js
@@ -0,0 +1,129 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import IconButton from '../../../components/icon_button';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import DropdownMenuContainer from '../../../containers/dropdown_menu_container';
+import { defineMessages, injectIntl } from 'react-intl';
+import { me } from '../../../initial_state';
+
+const messages = defineMessages({
+  delete: { id: 'status.delete', defaultMessage: 'Delete' },
+  mention: { id: 'status.mention', defaultMessage: 'Mention @{name}' },
+  reply: { id: 'status.reply', defaultMessage: 'Reply' },
+  reblog: { id: 'status.reblog', defaultMessage: 'Boost' },
+  cannot_reblog: { id: 'status.cannot_reblog', defaultMessage: 'This post cannot be boosted' },
+  favourite: { id: 'status.favourite', defaultMessage: 'Favourite' },
+  report: { id: 'status.report', defaultMessage: 'Report @{name}' },
+  share: { id: 'status.share', defaultMessage: 'Share' },
+  pin: { id: 'status.pin', defaultMessage: 'Pin on profile' },
+  unpin: { id: 'status.unpin', defaultMessage: 'Unpin from profile' },
+  embed: { id: 'status.embed', defaultMessage: 'Embed' },
+});
+
+@injectIntl
+export default class ActionBar extends React.PureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    status: ImmutablePropTypes.map.isRequired,
+    onReply: PropTypes.func.isRequired,
+    onReblog: PropTypes.func.isRequired,
+    onFavourite: PropTypes.func.isRequired,
+    onDelete: PropTypes.func.isRequired,
+    onMention: PropTypes.func.isRequired,
+    onReport: PropTypes.func,
+    onPin: PropTypes.func,
+    onEmbed: PropTypes.func,
+    intl: PropTypes.object.isRequired,
+  };
+
+  handleReplyClick = () => {
+    this.props.onReply(this.props.status);
+  }
+
+  handleReblogClick = (e) => {
+    this.props.onReblog(this.props.status, e);
+  }
+
+  handleFavouriteClick = () => {
+    this.props.onFavourite(this.props.status);
+  }
+
+  handleDeleteClick = () => {
+    this.props.onDelete(this.props.status);
+  }
+
+  handleMentionClick = () => {
+    this.props.onMention(this.props.status.get('account'), this.context.router.history);
+  }
+
+  handleReport = () => {
+    this.props.onReport(this.props.status);
+  }
+
+  handlePinClick = () => {
+    this.props.onPin(this.props.status);
+  }
+
+  handleShare = () => {
+    navigator.share({
+      text: this.props.status.get('search_index'),
+      url: this.props.status.get('url'),
+    });
+  }
+
+  handleEmbed = () => {
+    this.props.onEmbed(this.props.status);
+  }
+
+  render () {
+    const { status, intl } = this.props;
+
+    const publicStatus = ['public', 'unlisted'].includes(status.get('visibility'));
+
+    let menu = [];
+
+    if (publicStatus) {
+      menu.push({ text: intl.formatMessage(messages.embed), action: this.handleEmbed });
+    }
+
+    if (me === status.getIn(['account', 'id'])) {
+      if (publicStatus) {
+        menu.push({ text: intl.formatMessage(status.get('pinned') ? messages.unpin : messages.pin), action: this.handlePinClick });
+      }
+
+      menu.push({ text: intl.formatMessage(messages.delete), action: this.handleDeleteClick });
+    } else {
+      menu.push({ text: intl.formatMessage(messages.mention, { name: status.getIn(['account', 'username']) }), action: this.handleMentionClick });
+      menu.push(null);
+      menu.push({ text: intl.formatMessage(messages.report, { name: status.getIn(['account', 'username']) }), action: this.handleReport });
+    }
+
+    const shareButton = ('share' in navigator) && status.get('visibility') === 'public' && (
+      <div className='detailed-status__button'><IconButton title={intl.formatMessage(messages.share)} icon='share-alt' onClick={this.handleShare} /></div>
+    );
+
+    let reblogIcon = 'retweet';
+    if (status.get('visibility') === 'direct') reblogIcon = 'envelope';
+    else if (status.get('visibility') === 'private') reblogIcon = 'lock';
+
+    let reblog_disabled = (status.get('visibility') === 'direct' || status.get('visibility') === 'private');
+
+    return (
+      <div className='detailed-status__action-bar'>
+        <div className='detailed-status__button'><IconButton title={intl.formatMessage(messages.reply)} icon={status.get('in_reply_to_id', null) === null ? 'reply' : 'reply-all'} onClick={this.handleReplyClick} /></div>
+        <div className='detailed-status__button'><IconButton disabled={reblog_disabled} active={status.get('reblogged')} title={reblog_disabled ? intl.formatMessage(messages.cannot_reblog) : intl.formatMessage(messages.reblog)} icon={reblogIcon} onClick={this.handleReblogClick} /></div>
+        <div className='detailed-status__button'><IconButton animate active={status.get('favourited')} title={intl.formatMessage(messages.favourite)} icon='star' onClick={this.handleFavouriteClick} activeStyle={{ color: '#ca8f04' }} /></div>
+        {shareButton}
+
+        <div className='detailed-status__action-bar-dropdown'>
+          <DropdownMenuContainer size={18} icon='ellipsis-h' items={menu} direction='left' ariaLabel='More' />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/status/components/card.js b/app/javascript/mastodon/features/status/components/card.js
new file mode 100644
index 00000000000..bb83374b9b3
--- /dev/null
+++ b/app/javascript/mastodon/features/status/components/card.js
@@ -0,0 +1,125 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import punycode from 'punycode';
+import classnames from 'classnames';
+
+const IDNA_PREFIX = 'xn--';
+
+const decodeIDNA = domain => {
+  return domain
+    .split('.')
+    .map(part => part.indexOf(IDNA_PREFIX) === 0 ? punycode.decode(part.slice(IDNA_PREFIX.length)) : part)
+    .join('.');
+};
+
+const getHostname = url => {
+  const parser = document.createElement('a');
+  parser.href = url;
+  return parser.hostname;
+};
+
+export default class Card extends React.PureComponent {
+
+  static propTypes = {
+    card: ImmutablePropTypes.map,
+    maxDescription: PropTypes.number,
+  };
+
+  static defaultProps = {
+    maxDescription: 50,
+  };
+
+  state = {
+    width: 0,
+  };
+
+  renderLink () {
+    const { card, maxDescription } = this.props;
+
+    let image    = '';
+    let provider = card.get('provider_name');
+
+    if (card.get('image')) {
+      image = (
+        <div className='status-card__image'>
+          <img src={card.get('image')} alt={card.get('title')} className='status-card__image-image' width={card.get('width')} height={card.get('height')} />
+        </div>
+      );
+    }
+
+    if (provider.length < 1) {
+      provider = decodeIDNA(getHostname(card.get('url')));
+    }
+
+    const className = classnames('status-card', {
+      'horizontal': card.get('width') > card.get('height'),
+    });
+
+    return (
+      <a href={card.get('url')} className={className} target='_blank' rel='noopener'>
+        {image}
+
+        <div className='status-card__content'>
+          <strong className='status-card__title' title={card.get('title')}>{card.get('title')}</strong>
+          <p className='status-card__description'>{(card.get('description') || '').substring(0, maxDescription)}</p>
+          <span className='status-card__host'>{provider}</span>
+        </div>
+      </a>
+    );
+  }
+
+  renderPhoto () {
+    const { card } = this.props;
+
+    return (
+      <a href={card.get('url')} className='status-card-photo' target='_blank' rel='noopener'>
+        <img src={card.get('url')} alt={card.get('title')} width={card.get('width')} height={card.get('height')} />
+      </a>
+    );
+  }
+
+  setRef = c => {
+    if (c) {
+      this.setState({ width: c.offsetWidth });
+    }
+  }
+
+  renderVideo () {
+    const { card }  = this.props;
+    const content   = { __html: card.get('html') };
+    const { width } = this.state;
+    const ratio     = card.get('width') / card.get('height');
+    const height    = card.get('width') > card.get('height') ? (width / ratio) : (width * ratio);
+
+    return (
+      <div
+        ref={this.setRef}
+        className='status-card-video'
+        dangerouslySetInnerHTML={content}
+        style={{ height }}
+      />
+    );
+  }
+
+  render () {
+    const { card } = this.props;
+
+    if (card === null) {
+      return null;
+    }
+
+    switch(card.get('type')) {
+    case 'link':
+      return this.renderLink();
+    case 'photo':
+      return this.renderPhoto();
+    case 'video':
+      return this.renderVideo();
+    case 'rich':
+    default:
+      return null;
+    }
+  }
+
+}
diff --git a/app/javascript/mastodon/features/status/components/detailed_status.js b/app/javascript/mastodon/features/status/components/detailed_status.js
new file mode 100644
index 00000000000..81f71749b11
--- /dev/null
+++ b/app/javascript/mastodon/features/status/components/detailed_status.js
@@ -0,0 +1,125 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import Avatar from '../../../components/avatar';
+import DisplayName from '../../../components/display_name';
+import StatusContent from '../../../components/status_content';
+import MediaGallery from '../../../components/media_gallery';
+import AttachmentList from '../../../components/attachment_list';
+import { Link } from 'react-router-dom';
+import { FormattedDate, FormattedNumber } from 'react-intl';
+import CardContainer from '../containers/card_container';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import Video from '../../video';
+
+export default class DetailedStatus extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    status: ImmutablePropTypes.map.isRequired,
+    onOpenMedia: PropTypes.func.isRequired,
+    onOpenVideo: PropTypes.func.isRequired,
+  };
+
+  handleAccountClick = (e) => {
+    if (e.button === 0) {
+      e.preventDefault();
+      this.context.router.history.push(`/accounts/${this.props.status.getIn(['account', 'id'])}`);
+    }
+
+    e.stopPropagation();
+  }
+
+  handleOpenVideo = startTime => {
+    this.props.onOpenVideo(this.props.status.getIn(['media_attachments', 0]), startTime);
+  }
+
+  render () {
+    const status = this.props.status.get('reblog') ? this.props.status.get('reblog') : this.props.status;
+
+    let media           = '';
+    let applicationLink = '';
+    let reblogLink = '';
+    let reblogIcon = 'retweet';
+
+    if (status.get('media_attachments').size > 0) {
+      if (status.get('media_attachments').some(item => item.get('type') === 'unknown')) {
+        media = <AttachmentList media={status.get('media_attachments')} />;
+      } else if (status.getIn(['media_attachments', 0, 'type']) === 'video') {
+        const video = status.getIn(['media_attachments', 0]);
+
+        media = (
+          <Video
+            preview={video.get('preview_url')}
+            src={video.get('url')}
+            width={300}
+            height={150}
+            onOpenVideo={this.handleOpenVideo}
+            sensitive={status.get('sensitive')}
+          />
+        );
+      } else {
+        media = (
+          <MediaGallery
+            standalone
+            sensitive={status.get('sensitive')}
+            media={status.get('media_attachments')}
+            height={300}
+            onOpenMedia={this.props.onOpenMedia}
+          />
+        );
+      }
+    } else if (status.get('spoiler_text').length === 0) {
+      media = <CardContainer statusId={status.get('id')} />;
+    }
+
+    if (status.get('application')) {
+      applicationLink = <span> · <a className='detailed-status__application' href={status.getIn(['application', 'website'])} target='_blank' rel='noopener'>{status.getIn(['application', 'name'])}</a></span>;
+    }
+
+    if (status.get('visibility') === 'direct') {
+      reblogIcon = 'envelope';
+    } else if (status.get('visibility') === 'private') {
+      reblogIcon = 'lock';
+    }
+
+    if (status.get('visibility') === 'private') {
+      reblogLink = <i className={`fa fa-${reblogIcon}`} />;
+    } else {
+      reblogLink = (<Link to={`/statuses/${status.get('id')}/reblogs`} className='detailed-status__link'>
+        <i className={`fa fa-${reblogIcon}`} />
+        <span className='detailed-status__reblogs'>
+          <FormattedNumber value={status.get('reblogs_count')} />
+        </span>
+      </Link>);
+    }
+
+    return (
+      <div className='detailed-status'>
+        <a href={status.getIn(['account', 'url'])} onClick={this.handleAccountClick} className='detailed-status__display-name'>
+          <div className='detailed-status__display-avatar'><Avatar account={status.get('account')} size={48} /></div>
+          <DisplayName account={status.get('account')} />
+        </a>
+
+        <StatusContent status={status} />
+
+        {media}
+
+        <div className='detailed-status__meta'>
+          <a className='detailed-status__datetime' href={status.get('url')} target='_blank' rel='noopener'>
+            <FormattedDate value={new Date(status.get('created_at'))} hour12={false} year='numeric' month='short' day='2-digit' hour='2-digit' minute='2-digit' />
+          </a>{applicationLink} · {reblogLink} · <Link to={`/statuses/${status.get('id')}/favourites`} className='detailed-status__link'>
+            <i className='fa fa-star' />
+            <span className='detailed-status__favorites'>
+              <FormattedNumber value={status.get('favourites_count')} />
+            </span>
+          </Link>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/status/containers/card_container.js b/app/javascript/mastodon/features/status/containers/card_container.js
new file mode 100644
index 00000000000..a97404de190
--- /dev/null
+++ b/app/javascript/mastodon/features/status/containers/card_container.js
@@ -0,0 +1,8 @@
+import { connect } from 'react-redux';
+import Card from '../components/card';
+
+const mapStateToProps = (state, { statusId }) => ({
+  card: state.getIn(['cards', statusId], null),
+});
+
+export default connect(mapStateToProps)(Card);
diff --git a/app/javascript/mastodon/features/status/index.js b/app/javascript/mastodon/features/status/index.js
new file mode 100644
index 00000000000..cc28ff5fcad
--- /dev/null
+++ b/app/javascript/mastodon/features/status/index.js
@@ -0,0 +1,338 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import classNames from 'classnames';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { fetchStatus } from '../../actions/statuses';
+import MissingIndicator from '../../components/missing_indicator';
+import DetailedStatus from './components/detailed_status';
+import ActionBar from './components/action_bar';
+import Column from '../ui/components/column';
+import {
+  favourite,
+  unfavourite,
+  reblog,
+  unreblog,
+  pin,
+  unpin,
+} from '../../actions/interactions';
+import {
+  replyCompose,
+  mentionCompose,
+} from '../../actions/compose';
+import { deleteStatus } from '../../actions/statuses';
+import { initReport } from '../../actions/reports';
+import { makeGetStatus } from '../../selectors';
+import { ScrollContainer } from 'react-router-scroll-4';
+import ColumnBackButton from '../../components/column_back_button';
+import StatusContainer from '../../containers/status_container';
+import { openModal } from '../../actions/modal';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { HotKeys } from 'react-hotkeys';
+import { boostModal, deleteModal } from '../../initial_state';
+import { attachFullscreenListener, detachFullscreenListener, isFullscreen } from '../../features/ui/util/fullscreen';
+
+const messages = defineMessages({
+  deleteConfirm: { id: 'confirmations.delete.confirm', defaultMessage: 'Delete' },
+  deleteMessage: { id: 'confirmations.delete.message', defaultMessage: 'Are you sure you want to delete this status?' },
+});
+
+const makeMapStateToProps = () => {
+  const getStatus = makeGetStatus();
+
+  const mapStateToProps = (state, props) => ({
+    status: getStatus(state, props.params.statusId),
+    ancestorsIds: state.getIn(['contexts', 'ancestors', props.params.statusId]),
+    descendantsIds: state.getIn(['contexts', 'descendants', props.params.statusId]),
+  });
+
+  return mapStateToProps;
+};
+
+@injectIntl
+@connect(makeMapStateToProps)
+export default class Status extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    status: ImmutablePropTypes.map,
+    ancestorsIds: ImmutablePropTypes.list,
+    descendantsIds: ImmutablePropTypes.list,
+    intl: PropTypes.object.isRequired,
+  };
+
+  state = {
+    fullscreen: false,
+  };
+
+  componentWillMount () {
+    this.props.dispatch(fetchStatus(this.props.params.statusId));
+  }
+
+  componentDidMount () {
+    attachFullscreenListener(this.onFullScreenChange);
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (nextProps.params.statusId !== this.props.params.statusId && nextProps.params.statusId) {
+      this._scrolledIntoView = false;
+      this.props.dispatch(fetchStatus(nextProps.params.statusId));
+    }
+  }
+
+  handleFavouriteClick = (status) => {
+    if (status.get('favourited')) {
+      this.props.dispatch(unfavourite(status));
+    } else {
+      this.props.dispatch(favourite(status));
+    }
+  }
+
+  handlePin = (status) => {
+    if (status.get('pinned')) {
+      this.props.dispatch(unpin(status));
+    } else {
+      this.props.dispatch(pin(status));
+    }
+  }
+
+  handleReplyClick = (status) => {
+    this.props.dispatch(replyCompose(status, this.context.router.history));
+  }
+
+  handleModalReblog = (status) => {
+    this.props.dispatch(reblog(status));
+  }
+
+  handleReblogClick = (status, e) => {
+    if (status.get('reblogged')) {
+      this.props.dispatch(unreblog(status));
+    } else {
+      if (e.shiftKey || !boostModal) {
+        this.handleModalReblog(status);
+      } else {
+        this.props.dispatch(openModal('BOOST', { status, onReblog: this.handleModalReblog }));
+      }
+    }
+  }
+
+  handleDeleteClick = (status) => {
+    const { dispatch, intl } = this.props;
+
+    if (!deleteModal) {
+      dispatch(deleteStatus(status.get('id')));
+    } else {
+      dispatch(openModal('CONFIRM', {
+        message: intl.formatMessage(messages.deleteMessage),
+        confirm: intl.formatMessage(messages.deleteConfirm),
+        onConfirm: () => dispatch(deleteStatus(status.get('id'))),
+      }));
+    }
+  }
+
+  handleMentionClick = (account, router) => {
+    this.props.dispatch(mentionCompose(account, router));
+  }
+
+  handleOpenMedia = (media, index) => {
+    this.props.dispatch(openModal('MEDIA', { media, index }));
+  }
+
+  handleOpenVideo = (media, time) => {
+    this.props.dispatch(openModal('VIDEO', { media, time }));
+  }
+
+  handleReport = (status) => {
+    this.props.dispatch(initReport(status.get('account'), status));
+  }
+
+  handleEmbed = (status) => {
+    this.props.dispatch(openModal('EMBED', { url: status.get('url') }));
+  }
+
+  handleHotkeyMoveUp = () => {
+    this.handleMoveUp(this.props.status.get('id'));
+  }
+
+  handleHotkeyMoveDown = () => {
+    this.handleMoveDown(this.props.status.get('id'));
+  }
+
+  handleHotkeyReply = e => {
+    e.preventDefault();
+    this.handleReplyClick(this.props.status);
+  }
+
+  handleHotkeyFavourite = () => {
+    this.handleFavouriteClick(this.props.status);
+  }
+
+  handleHotkeyBoost = () => {
+    this.handleReblogClick(this.props.status);
+  }
+
+  handleHotkeyMention = e => {
+    e.preventDefault();
+    this.handleMentionClick(this.props.status);
+  }
+
+  handleHotkeyOpenProfile = () => {
+    this.context.router.history.push(`/accounts/${this.props.status.getIn(['account', 'id'])}`);
+  }
+
+  handleMoveUp = id => {
+    const { status, ancestorsIds, descendantsIds } = this.props;
+
+    if (id === status.get('id')) {
+      this._selectChild(ancestorsIds.size - 1);
+    } else {
+      let index = ancestorsIds.indexOf(id);
+
+      if (index === -1) {
+        index = descendantsIds.indexOf(id);
+        this._selectChild(ancestorsIds.size + index);
+      } else {
+        this._selectChild(index - 1);
+      }
+    }
+  }
+
+  handleMoveDown = id => {
+    const { status, ancestorsIds, descendantsIds } = this.props;
+
+    if (id === status.get('id')) {
+      this._selectChild(ancestorsIds.size + 1);
+    } else {
+      let index = ancestorsIds.indexOf(id);
+
+      if (index === -1) {
+        index = descendantsIds.indexOf(id);
+        this._selectChild(ancestorsIds.size + index + 2);
+      } else {
+        this._selectChild(index + 1);
+      }
+    }
+  }
+
+  _selectChild (index) {
+    const element = this.node.querySelectorAll('.focusable')[index];
+
+    if (element) {
+      element.focus();
+    }
+  }
+
+  renderChildren (list) {
+    return list.map(id => (
+      <StatusContainer
+        key={id}
+        id={id}
+        onMoveUp={this.handleMoveUp}
+        onMoveDown={this.handleMoveDown}
+      />
+    ));
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  componentDidUpdate () {
+    if (this._scrolledIntoView) {
+      return;
+    }
+
+    const { status, ancestorsIds } = this.props;
+
+    if (status && ancestorsIds && ancestorsIds.size > 0) {
+      const element = this.node.querySelectorAll('.focusable')[ancestorsIds.size - 1];
+
+      element.scrollIntoView(true);
+      this._scrolledIntoView = true;
+    }
+  }
+
+  componentWillUnmount () {
+    detachFullscreenListener(this.onFullScreenChange);
+  }
+
+  onFullScreenChange = () => {
+    this.setState({ fullscreen: isFullscreen() });
+  }
+
+  render () {
+    let ancestors, descendants;
+    const { status, ancestorsIds, descendantsIds } = this.props;
+    const { fullscreen } = this.state;
+
+    if (status === null) {
+      return (
+        <Column>
+          <ColumnBackButton />
+          <MissingIndicator />
+        </Column>
+      );
+    }
+
+    if (ancestorsIds && ancestorsIds.size > 0) {
+      ancestors = <div>{this.renderChildren(ancestorsIds)}</div>;
+    }
+
+    if (descendantsIds && descendantsIds.size > 0) {
+      descendants = <div>{this.renderChildren(descendantsIds)}</div>;
+    }
+
+    const handlers = {
+      moveUp: this.handleHotkeyMoveUp,
+      moveDown: this.handleHotkeyMoveDown,
+      reply: this.handleHotkeyReply,
+      favourite: this.handleHotkeyFavourite,
+      boost: this.handleHotkeyBoost,
+      mention: this.handleHotkeyMention,
+      openProfile: this.handleHotkeyOpenProfile,
+    };
+
+    return (
+      <Column>
+        <ColumnBackButton />
+
+        <ScrollContainer scrollKey='thread'>
+          <div className={classNames('scrollable', 'detailed-status__wrapper', { fullscreen })} ref={this.setRef}>
+            {ancestors}
+
+            <HotKeys handlers={handlers}>
+              <div className='focusable' tabIndex='0'>
+                <DetailedStatus
+                  status={status}
+                  onOpenVideo={this.handleOpenVideo}
+                  onOpenMedia={this.handleOpenMedia}
+                />
+
+                <ActionBar
+                  status={status}
+                  onReply={this.handleReplyClick}
+                  onFavourite={this.handleFavouriteClick}
+                  onReblog={this.handleReblogClick}
+                  onDelete={this.handleDeleteClick}
+                  onMention={this.handleMentionClick}
+                  onReport={this.handleReport}
+                  onPin={this.handlePin}
+                  onEmbed={this.handleEmbed}
+                />
+              </div>
+            </HotKeys>
+
+            {descendants}
+          </div>
+        </ScrollContainer>
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/__tests__/column-test.js b/app/javascript/mastodon/features/ui/components/__tests__/column-test.js
new file mode 100644
index 00000000000..1e5e1d8dc5c
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/__tests__/column-test.js
@@ -0,0 +1,34 @@
+import React from 'react';
+import { mount } from 'enzyme';
+import Column from '../column';
+import ColumnHeader from '../column_header';
+
+describe('<Column />', () => {
+  describe('<ColumnHeader /> click handler', () => {
+    const originalRaf = global.requestAnimationFrame;
+
+    beforeEach(() => {
+      global.requestAnimationFrame = jest.fn();
+    });
+
+    afterAll(() => {
+      global.requestAnimationFrame = originalRaf;
+    });
+
+    it('runs the scroll animation if the column contains scrollable content', () => {
+      const wrapper = mount(
+        <Column heading='notifications'>
+          <div className='scrollable' />
+        </Column>
+      );
+      wrapper.find(ColumnHeader).simulate('click');
+      expect(global.requestAnimationFrame.mock.calls.length).toEqual(1);
+    });
+
+    it('does not try to scroll if there is no scrollable content', () => {
+      const wrapper = mount(<Column heading='notifications' />);
+      wrapper.find(ColumnHeader).simulate('click');
+      expect(global.requestAnimationFrame.mock.calls.length).toEqual(0);
+    });
+  });
+});
diff --git a/app/javascript/mastodon/features/ui/components/actions_modal.js b/app/javascript/mastodon/features/ui/components/actions_modal.js
new file mode 100644
index 00000000000..79a5a20ef67
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/actions_modal.js
@@ -0,0 +1,74 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import StatusContent from '../../../components/status_content';
+import Avatar from '../../../components/avatar';
+import RelativeTimestamp from '../../../components/relative_timestamp';
+import DisplayName from '../../../components/display_name';
+import IconButton from '../../../components/icon_button';
+import classNames from 'classnames';
+
+export default class ActionsModal extends ImmutablePureComponent {
+
+  static propTypes = {
+    status: ImmutablePropTypes.map,
+    actions: PropTypes.array,
+    onClick: PropTypes.func,
+  };
+
+  renderAction = (action, i) => {
+    if (action === null) {
+      return <li key={`sep-${i}`} className='dropdown-menu__separator' />;
+    }
+
+    const { icon = null, text, meta = null, active = false, href = '#' } = action;
+
+    return (
+      <li key={`${text}-${i}`}>
+        <a href={href} target='_blank' rel='noopener' onClick={this.props.onClick} data-index={i} className={classNames({ active })}>
+          {icon && <IconButton title={text} icon={icon} role='presentation' tabIndex='-1' />}
+          <div>
+            <div className={classNames({ 'actions-modal__item-label': !!meta })}>{text}</div>
+            <div>{meta}</div>
+          </div>
+        </a>
+      </li>
+    );
+  }
+
+  render () {
+    const status = this.props.status && (
+      <div className='status light'>
+        <div className='boost-modal__status-header'>
+          <div className='boost-modal__status-time'>
+            <a href={this.props.status.get('url')} className='status__relative-time' target='_blank' rel='noopener'>
+              <RelativeTimestamp timestamp={this.props.status.get('created_at')} />
+            </a>
+          </div>
+
+          <a href={this.props.status.getIn(['account', 'url'])} className='status__display-name'>
+            <div className='status__avatar'>
+              <Avatar account={this.props.status.get('account')} size={48} />
+            </div>
+
+            <DisplayName account={this.props.status.get('account')} />
+          </a>
+        </div>
+
+        <StatusContent status={this.props.status} />
+      </div>
+    );
+
+    return (
+      <div className='modal-root__modal actions-modal'>
+        {status}
+
+        <ul>
+          {this.props.actions.map(this.renderAction)}
+        </ul>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/boost_modal.js b/app/javascript/mastodon/features/ui/components/boost_modal.js
new file mode 100644
index 00000000000..0e9592c977f
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/boost_modal.js
@@ -0,0 +1,84 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import Button from '../../../components/button';
+import StatusContent from '../../../components/status_content';
+import Avatar from '../../../components/avatar';
+import RelativeTimestamp from '../../../components/relative_timestamp';
+import DisplayName from '../../../components/display_name';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const messages = defineMessages({
+  reblog: { id: 'status.reblog', defaultMessage: 'Boost' },
+});
+
+@injectIntl
+export default class BoostModal extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    status: ImmutablePropTypes.map.isRequired,
+    onReblog: PropTypes.func.isRequired,
+    onClose: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  componentDidMount() {
+    this.button.focus();
+  }
+
+  handleReblog = () => {
+    this.props.onReblog(this.props.status);
+    this.props.onClose();
+  }
+
+  handleAccountClick = (e) => {
+    if (e.button === 0) {
+      e.preventDefault();
+      this.props.onClose();
+      this.context.router.history.push(`/accounts/${this.props.status.getIn(['account', 'id'])}`);
+    }
+  }
+
+  setRef = (c) => {
+    this.button = c;
+  }
+
+  render () {
+    const { status, intl } = this.props;
+
+    return (
+      <div className='modal-root__modal boost-modal'>
+        <div className='boost-modal__container'>
+          <div className='status light'>
+            <div className='boost-modal__status-header'>
+              <div className='boost-modal__status-time'>
+                <a href={status.get('url')} className='status__relative-time' target='_blank' rel='noopener'><RelativeTimestamp timestamp={status.get('created_at')} /></a>
+              </div>
+
+              <a onClick={this.handleAccountClick} href={status.getIn(['account', 'url'])} className='status__display-name'>
+                <div className='status__avatar'>
+                  <Avatar account={status.get('account')} size={48} />
+                </div>
+
+                <DisplayName account={status.get('account')} />
+              </a>
+            </div>
+
+            <StatusContent status={status} />
+          </div>
+        </div>
+
+        <div className='boost-modal__action-bar'>
+          <div><FormattedMessage id='boost_modal.combo' defaultMessage='You can press {combo} to skip this next time' values={{ combo: <span>Shift + <i className='fa fa-retweet' /></span> }} /></div>
+          <Button text={intl.formatMessage(messages.reblog)} onClick={this.handleReblog} ref={this.setRef} />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/bundle.js b/app/javascript/mastodon/features/ui/components/bundle.js
new file mode 100644
index 00000000000..fc88e0c70f1
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/bundle.js
@@ -0,0 +1,102 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+const emptyComponent = () => null;
+const noop = () => { };
+
+class Bundle extends React.Component {
+
+  static propTypes = {
+    fetchComponent: PropTypes.func.isRequired,
+    loading: PropTypes.func,
+    error: PropTypes.func,
+    children: PropTypes.func.isRequired,
+    renderDelay: PropTypes.number,
+    onFetch: PropTypes.func,
+    onFetchSuccess: PropTypes.func,
+    onFetchFail: PropTypes.func,
+  }
+
+  static defaultProps = {
+    loading: emptyComponent,
+    error: emptyComponent,
+    renderDelay: 0,
+    onFetch: noop,
+    onFetchSuccess: noop,
+    onFetchFail: noop,
+  }
+
+  static cache = {}
+
+  state = {
+    mod: undefined,
+    forceRender: false,
+  }
+
+  componentWillMount() {
+    this.load(this.props);
+  }
+
+  componentWillReceiveProps(nextProps) {
+    if (nextProps.fetchComponent !== this.props.fetchComponent) {
+      this.load(nextProps);
+    }
+  }
+
+  componentWillUnmount () {
+    if (this.timeout) {
+      clearTimeout(this.timeout);
+    }
+  }
+
+  load = (props) => {
+    const { fetchComponent, onFetch, onFetchSuccess, onFetchFail, renderDelay } = props || this.props;
+
+    onFetch();
+
+    if (Bundle.cache[fetchComponent.name]) {
+      const mod = Bundle.cache[fetchComponent.name];
+
+      this.setState({ mod: mod.default });
+      onFetchSuccess();
+      return Promise.resolve();
+    }
+
+    this.setState({ mod: undefined });
+
+    if (renderDelay !== 0) {
+      this.timestamp = new Date();
+      this.timeout = setTimeout(() => this.setState({ forceRender: true }), renderDelay);
+    }
+
+    return fetchComponent()
+      .then((mod) => {
+        Bundle.cache[fetchComponent.name] = mod;
+        this.setState({ mod: mod.default });
+        onFetchSuccess();
+      })
+      .catch((error) => {
+        this.setState({ mod: null });
+        onFetchFail(error);
+      });
+  }
+
+  render() {
+    const { loading: Loading, error: Error, children, renderDelay } = this.props;
+    const { mod, forceRender } = this.state;
+    const elapsed = this.timestamp ? (new Date() - this.timestamp) : renderDelay;
+
+    if (mod === undefined) {
+      return (elapsed >= renderDelay || forceRender) ? <Loading /> : null;
+    }
+
+    if (mod === null) {
+      return <Error onRetry={this.load} />;
+    }
+
+    return children(mod);
+  }
+
+}
+
+export default Bundle;
diff --git a/app/javascript/mastodon/features/ui/components/bundle_column_error.js b/app/javascript/mastodon/features/ui/components/bundle_column_error.js
new file mode 100644
index 00000000000..cd124746acb
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/bundle_column_error.js
@@ -0,0 +1,44 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl } from 'react-intl';
+
+import Column from './column';
+import ColumnHeader from './column_header';
+import ColumnBackButtonSlim from '../../../components/column_back_button_slim';
+import IconButton from '../../../components/icon_button';
+
+const messages = defineMessages({
+  title: { id: 'bundle_column_error.title', defaultMessage: 'Network error' },
+  body: { id: 'bundle_column_error.body', defaultMessage: 'Something went wrong while loading this component.' },
+  retry: { id: 'bundle_column_error.retry', defaultMessage: 'Try again' },
+});
+
+class BundleColumnError extends React.Component {
+
+  static propTypes = {
+    onRetry: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  }
+
+  handleRetry = () => {
+    this.props.onRetry();
+  }
+
+  render () {
+    const { intl: { formatMessage } } = this.props;
+
+    return (
+      <Column>
+        <ColumnHeader icon='exclamation-circle' type={formatMessage(messages.title)} />
+        <ColumnBackButtonSlim />
+        <div className='error-column'>
+          <IconButton title={formatMessage(messages.retry)} icon='refresh' onClick={this.handleRetry} size={64} />
+          {formatMessage(messages.body)}
+        </div>
+      </Column>
+    );
+  }
+
+}
+
+export default injectIntl(BundleColumnError);
diff --git a/app/javascript/mastodon/features/ui/components/bundle_modal_error.js b/app/javascript/mastodon/features/ui/components/bundle_modal_error.js
new file mode 100644
index 00000000000..928bfe1f7d5
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/bundle_modal_error.js
@@ -0,0 +1,53 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl } from 'react-intl';
+
+import IconButton from '../../../components/icon_button';
+
+const messages = defineMessages({
+  error: { id: 'bundle_modal_error.message', defaultMessage: 'Something went wrong while loading this component.' },
+  retry: { id: 'bundle_modal_error.retry', defaultMessage: 'Try again' },
+  close: { id: 'bundle_modal_error.close', defaultMessage: 'Close' },
+});
+
+class BundleModalError extends React.Component {
+
+  static propTypes = {
+    onRetry: PropTypes.func.isRequired,
+    onClose: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  }
+
+  handleRetry = () => {
+    this.props.onRetry();
+  }
+
+  render () {
+    const { onClose, intl: { formatMessage } } = this.props;
+
+    // Keep the markup in sync with <ModalLoading />
+    // (make sure they have the same dimensions)
+    return (
+      <div className='modal-root__modal error-modal'>
+        <div className='error-modal__body'>
+          <IconButton title={formatMessage(messages.retry)} icon='refresh' onClick={this.handleRetry} size={64} />
+          {formatMessage(messages.error)}
+        </div>
+
+        <div className='error-modal__footer'>
+          <div>
+            <button
+              onClick={onClose}
+              className='error-modal__nav onboarding-modal__skip'
+            >
+              {formatMessage(messages.close)}
+            </button>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
+
+export default injectIntl(BundleModalError);
diff --git a/app/javascript/mastodon/features/ui/components/column.js b/app/javascript/mastodon/features/ui/components/column.js
new file mode 100644
index 00000000000..15538ea387a
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/column.js
@@ -0,0 +1,72 @@
+import React from 'react';
+import ColumnHeader from './column_header';
+import PropTypes from 'prop-types';
+import { debounce } from 'lodash';
+import { scrollTop } from '../../../scroll';
+import { isMobile } from '../../../is_mobile';
+
+export default class Column extends React.PureComponent {
+
+  static propTypes = {
+    heading: PropTypes.string,
+    icon: PropTypes.string,
+    children: PropTypes.node,
+    active: PropTypes.bool,
+    hideHeadingOnMobile: PropTypes.bool,
+  };
+
+  handleHeaderClick = () => {
+    const scrollable = this.node.querySelector('.scrollable');
+
+    if (!scrollable) {
+      return;
+    }
+
+    this._interruptScrollAnimation = scrollTop(scrollable);
+  }
+
+  scrollTop () {
+    const scrollable = this.node.querySelector('.scrollable');
+
+    if (!scrollable) {
+      return;
+    }
+
+    this._interruptScrollAnimation = scrollTop(scrollable);
+  }
+
+
+  handleScroll = debounce(() => {
+    if (typeof this._interruptScrollAnimation !== 'undefined') {
+      this._interruptScrollAnimation();
+    }
+  }, 200)
+
+  setRef = (c) => {
+    this.node = c;
+  }
+
+  render () {
+    const { heading, icon, children, active, hideHeadingOnMobile } = this.props;
+
+    const showHeading = heading && (!hideHeadingOnMobile || (hideHeadingOnMobile && !isMobile(window.innerWidth)));
+
+    const columnHeaderId = showHeading && heading.replace(/ /g, '-');
+    const header = showHeading && (
+      <ColumnHeader icon={icon} active={active} type={heading} onClick={this.handleHeaderClick} columnHeaderId={columnHeaderId} />
+    );
+    return (
+      <div
+        ref={this.setRef}
+        role='region'
+        aria-labelledby={columnHeaderId}
+        className='column'
+        onScroll={this.handleScroll}
+      >
+        {header}
+        {children}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/column_header.js b/app/javascript/mastodon/features/ui/components/column_header.js
new file mode 100644
index 00000000000..af195ea9c07
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/column_header.js
@@ -0,0 +1,35 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+export default class ColumnHeader extends React.PureComponent {
+
+  static propTypes = {
+    icon: PropTypes.string,
+    type: PropTypes.string,
+    active: PropTypes.bool,
+    onClick: PropTypes.func,
+    columnHeaderId: PropTypes.string,
+  };
+
+  handleClick = () => {
+    this.props.onClick();
+  }
+
+  render () {
+    const { type, active, columnHeaderId } = this.props;
+
+    let icon = '';
+
+    if (this.props.icon) {
+      icon = <i className={`fa fa-fw fa-${this.props.icon} column-header__icon`} />;
+    }
+
+    return (
+      <div role='heading' tabIndex='0' className={`column-header ${active ? 'active' : ''}`} onClick={this.handleClick} id={columnHeaderId || null}>
+        {icon}
+        {type}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/column_link.js b/app/javascript/mastodon/features/ui/components/column_link.js
new file mode 100644
index 00000000000..5425219c4da
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/column_link.js
@@ -0,0 +1,32 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { Link } from 'react-router-dom';
+
+const ColumnLink = ({ icon, text, to, href, method }) => {
+  if (href) {
+    return (
+      <a href={href} className='column-link' data-method={method}>
+        <i className={`fa fa-fw fa-${icon} column-link__icon`} />
+        {text}
+      </a>
+    );
+  } else {
+    return (
+      <Link to={to} className='column-link'>
+        <i className={`fa fa-fw fa-${icon} column-link__icon`} />
+        {text}
+      </Link>
+    );
+  }
+};
+
+ColumnLink.propTypes = {
+  icon: PropTypes.string.isRequired,
+  text: PropTypes.string.isRequired,
+  to: PropTypes.string,
+  href: PropTypes.string,
+  method: PropTypes.string,
+  hideOnMobile: PropTypes.bool,
+};
+
+export default ColumnLink;
diff --git a/app/javascript/mastodon/features/ui/components/column_loading.js b/app/javascript/mastodon/features/ui/components/column_loading.js
new file mode 100644
index 00000000000..9503a7a1ac6
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/column_loading.js
@@ -0,0 +1,30 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+import Column from '../../../components/column';
+import ColumnHeader from '../../../components/column_header';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+export default class ColumnLoading extends ImmutablePureComponent {
+
+  static propTypes = {
+    title: PropTypes.oneOfType([PropTypes.node, PropTypes.string]),
+    icon: PropTypes.string,
+  };
+
+  static defaultProps = {
+    title: '',
+    icon: '',
+  };
+
+  render() {
+    let { title, icon } = this.props;
+    return (
+      <Column>
+        <ColumnHeader icon={icon} title={title} multiColumn={false} focusable={false} />
+        <div className='scrollable' />
+      </Column>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/column_subheading.js b/app/javascript/mastodon/features/ui/components/column_subheading.js
new file mode 100644
index 00000000000..8160c4aa394
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/column_subheading.js
@@ -0,0 +1,16 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+const ColumnSubheading = ({ text }) => {
+  return (
+    <div className='column-subheading'>
+      {text}
+    </div>
+  );
+};
+
+ColumnSubheading.propTypes = {
+  text: PropTypes.string.isRequired,
+};
+
+export default ColumnSubheading;
diff --git a/app/javascript/mastodon/features/ui/components/columns_area.js b/app/javascript/mastodon/features/ui/components/columns_area.js
new file mode 100644
index 00000000000..5610095b999
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/columns_area.js
@@ -0,0 +1,173 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { injectIntl } from 'react-intl';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+import ReactSwipeableViews from 'react-swipeable-views';
+import { links, getIndex, getLink } from './tabs_bar';
+
+import BundleContainer from '../containers/bundle_container';
+import ColumnLoading from './column_loading';
+import DrawerLoading from './drawer_loading';
+import BundleColumnError from './bundle_column_error';
+import { Compose, Notifications, HomeTimeline, CommunityTimeline, PublicTimeline, HashtagTimeline, FavouritedStatuses } from '../../ui/util/async-components';
+
+import detectPassiveEvents from 'detect-passive-events';
+import { scrollRight } from '../../../scroll';
+
+const componentMap = {
+  'COMPOSE': Compose,
+  'HOME': HomeTimeline,
+  'NOTIFICATIONS': Notifications,
+  'PUBLIC': PublicTimeline,
+  'COMMUNITY': CommunityTimeline,
+  'HASHTAG': HashtagTimeline,
+  'FAVOURITES': FavouritedStatuses,
+};
+
+@component => injectIntl(component, { withRef: true })
+export default class ColumnsArea extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object.isRequired,
+  };
+
+  static propTypes = {
+    intl: PropTypes.object.isRequired,
+    columns: ImmutablePropTypes.list.isRequired,
+    singleColumn: PropTypes.bool,
+    children: PropTypes.node,
+  };
+
+  state = {
+    shouldAnimate: false,
+  }
+
+  componentWillReceiveProps() {
+    this.setState({ shouldAnimate: false });
+  }
+
+  componentDidMount() {
+    if (!this.props.singleColumn) {
+      this.node.addEventListener('wheel', this.handleWheel,  detectPassiveEvents.hasSupport ? { passive: true } : false);
+    }
+    this.lastIndex = getIndex(this.context.router.history.location.pathname);
+    this.setState({ shouldAnimate: true });
+  }
+
+  componentWillUpdate(nextProps) {
+    if (this.props.singleColumn !== nextProps.singleColumn && nextProps.singleColumn) {
+      this.node.removeEventListener('wheel', this.handleWheel);
+    }
+  }
+
+  componentDidUpdate(prevProps) {
+    if (this.props.singleColumn !== prevProps.singleColumn && !this.props.singleColumn) {
+      this.node.addEventListener('wheel', this.handleWheel,  detectPassiveEvents.hasSupport ? { passive: true } : false);
+    }
+    this.lastIndex = getIndex(this.context.router.history.location.pathname);
+    this.setState({ shouldAnimate: true });
+  }
+
+  componentWillUnmount () {
+    if (!this.props.singleColumn) {
+      this.node.removeEventListener('wheel', this.handleWheel);
+    }
+  }
+
+  handleChildrenContentChange() {
+    if (!this.props.singleColumn) {
+      this._interruptScrollAnimation = scrollRight(this.node, this.node.scrollWidth - window.innerWidth);
+    }
+  }
+
+  handleSwipe = (index) => {
+    this.pendingIndex = index;
+
+    const nextLinkTranslationId = links[index].props['data-preview-title-id'];
+    const currentLinkSelector = '.tabs-bar__link.active';
+    const nextLinkSelector = `.tabs-bar__link[data-preview-title-id="${nextLinkTranslationId}"]`;
+
+    // HACK: Remove the active class from the current link and set it to the next one
+    // React-router does this for us, but too late, feeling laggy.
+    document.querySelector(currentLinkSelector).classList.remove('active');
+    document.querySelector(nextLinkSelector).classList.add('active');
+  }
+
+  handleAnimationEnd = () => {
+    if (typeof this.pendingIndex === 'number') {
+      this.context.router.history.push(getLink(this.pendingIndex));
+      this.pendingIndex = null;
+    }
+  }
+
+  handleWheel = () => {
+    if (typeof this._interruptScrollAnimation !== 'function') {
+      return;
+    }
+
+    this._interruptScrollAnimation();
+  }
+
+  setRef = (node) => {
+    this.node = node;
+  }
+
+  renderView = (link, index) => {
+    const columnIndex = getIndex(this.context.router.history.location.pathname);
+    const title = this.props.intl.formatMessage({ id: link.props['data-preview-title-id'] });
+    const icon = link.props['data-preview-icon'];
+
+    const view = (index === columnIndex) ?
+      React.cloneElement(this.props.children) :
+      <ColumnLoading title={title} icon={icon} />;
+
+    return (
+      <div className='columns-area' key={index}>
+        {view}
+      </div>
+    );
+  }
+
+  renderLoading = columnId => () => {
+    return columnId === 'COMPOSE' ? <DrawerLoading /> : <ColumnLoading />;
+  }
+
+  renderError = (props) => {
+    return <BundleColumnError {...props} />;
+  }
+
+  render () {
+    const { columns, children, singleColumn } = this.props;
+    const { shouldAnimate } = this.state;
+
+    const columnIndex = getIndex(this.context.router.history.location.pathname);
+    this.pendingIndex = null;
+
+    if (singleColumn) {
+      return columnIndex !== -1 ? (
+        <ReactSwipeableViews index={columnIndex} onChangeIndex={this.handleSwipe} onTransitionEnd={this.handleAnimationEnd} animateTransitions={shouldAnimate} springConfig={{ duration: '400ms', delay: '0s', easeFunction: 'ease' }} style={{ height: '100%' }}>
+          {links.map(this.renderView)}
+        </ReactSwipeableViews>
+      ) : <div className='columns-area'>{children}</div>;
+    }
+
+    return (
+      <div className='columns-area' ref={this.setRef}>
+        {columns.map(column => {
+          const params = column.get('params', null) === null ? null : column.get('params').toJS();
+
+          return (
+            <BundleContainer key={column.get('uuid')} fetchComponent={componentMap[column.get('id')]} loading={this.renderLoading(column.get('id'))} error={this.renderError}>
+              {SpecificComponent => <SpecificComponent columnId={column.get('uuid')} params={params} multiColumn />}
+            </BundleContainer>
+          );
+        })}
+
+        {React.Children.map(children, child => React.cloneElement(child, { multiColumn: true }))}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/confirmation_modal.js b/app/javascript/mastodon/features/ui/components/confirmation_modal.js
new file mode 100644
index 00000000000..86588c46a23
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/confirmation_modal.js
@@ -0,0 +1,53 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { injectIntl, FormattedMessage } from 'react-intl';
+import Button from '../../../components/button';
+
+@injectIntl
+export default class ConfirmationModal extends React.PureComponent {
+
+  static propTypes = {
+    message: PropTypes.node.isRequired,
+    confirm: PropTypes.string.isRequired,
+    onClose: PropTypes.func.isRequired,
+    onConfirm: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  componentDidMount() {
+    this.button.focus();
+  }
+
+  handleClick = () => {
+    this.props.onClose();
+    this.props.onConfirm();
+  }
+
+  handleCancel = () => {
+    this.props.onClose();
+  }
+
+  setRef = (c) => {
+    this.button = c;
+  }
+
+  render () {
+    const { message, confirm } = this.props;
+
+    return (
+      <div className='modal-root__modal confirmation-modal'>
+        <div className='confirmation-modal__container'>
+          {message}
+        </div>
+
+        <div className='confirmation-modal__action-bar'>
+          <Button onClick={this.handleCancel} className='confirmation-modal__cancel-button'>
+            <FormattedMessage id='confirmation_modal.cancel' defaultMessage='Cancel' />
+          </Button>
+          <Button text={confirm} onClick={this.handleClick} ref={this.setRef} />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/drawer_loading.js b/app/javascript/mastodon/features/ui/components/drawer_loading.js
new file mode 100644
index 00000000000..08b0d234767
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/drawer_loading.js
@@ -0,0 +1,11 @@
+import React from 'react';
+
+const DrawerLoading = () => (
+  <div className='drawer'>
+    <div className='drawer__pager'>
+      <div className='drawer__inner' />
+    </div>
+  </div>
+);
+
+export default DrawerLoading;
diff --git a/app/javascript/mastodon/features/ui/components/embed_modal.js b/app/javascript/mastodon/features/ui/components/embed_modal.js
new file mode 100644
index 00000000000..1afffb51bc9
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/embed_modal.js
@@ -0,0 +1,84 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { FormattedMessage, injectIntl } from 'react-intl';
+import axios from 'axios';
+
+@injectIntl
+export default class EmbedModal extends ImmutablePureComponent {
+
+  static propTypes = {
+    url: PropTypes.string.isRequired,
+    onClose: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  }
+
+  state = {
+    loading: false,
+    oembed: null,
+  };
+
+  componentDidMount () {
+    const { url } = this.props;
+
+    this.setState({ loading: true });
+
+    axios.post('/api/web/embed', { url }).then(res => {
+      this.setState({ loading: false, oembed: res.data });
+
+      const iframeDocument = this.iframe.contentWindow.document;
+
+      iframeDocument.open();
+      iframeDocument.write(res.data.html);
+      iframeDocument.close();
+
+      iframeDocument.body.style.margin = 0;
+      this.iframe.width  = iframeDocument.body.scrollWidth;
+      this.iframe.height = iframeDocument.body.scrollHeight;
+    });
+  }
+
+  setIframeRef = c =>  {
+    this.iframe = c;
+  }
+
+  handleTextareaClick = (e) => {
+    e.target.select();
+  }
+
+  render () {
+    const { oembed } = this.state;
+
+    return (
+      <div className='modal-root__modal embed-modal'>
+        <h4><FormattedMessage id='status.embed' defaultMessage='Embed' /></h4>
+
+        <div className='embed-modal__container'>
+          <p className='hint'>
+            <FormattedMessage id='embed.instructions' defaultMessage='Embed this status on your website by copying the code below.' />
+          </p>
+
+          <input
+            type='text'
+            className='embed-modal__html'
+            readOnly
+            value={oembed && oembed.html || ''}
+            onClick={this.handleTextareaClick}
+          />
+
+          <p className='hint'>
+            <FormattedMessage id='embed.preview' defaultMessage='Here is what it will look like:' />
+          </p>
+
+          <iframe
+            className='embed-modal__iframe'
+            frameBorder='0'
+            ref={this.setIframeRef}
+            title='preview'
+          />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/image_loader.js b/app/javascript/mastodon/features/ui/components/image_loader.js
new file mode 100644
index 00000000000..aad594380e8
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/image_loader.js
@@ -0,0 +1,152 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import classNames from 'classnames';
+
+export default class ImageLoader extends React.PureComponent {
+
+  static propTypes = {
+    alt: PropTypes.string,
+    src: PropTypes.string.isRequired,
+    previewSrc: PropTypes.string.isRequired,
+    width: PropTypes.number,
+    height: PropTypes.number,
+  }
+
+  static defaultProps = {
+    alt: '',
+    width: null,
+    height: null,
+  };
+
+  state = {
+    loading: true,
+    error: false,
+  }
+
+  removers = [];
+
+  get canvasContext() {
+    if (!this.canvas) {
+      return null;
+    }
+    this._canvasContext = this._canvasContext || this.canvas.getContext('2d');
+    return this._canvasContext;
+  }
+
+  componentDidMount () {
+    this.loadImage(this.props);
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (this.props.src !== nextProps.src) {
+      this.loadImage(nextProps);
+    }
+  }
+
+  loadImage (props) {
+    this.removeEventListeners();
+    this.setState({ loading: true, error: false });
+    Promise.all([
+      this.loadPreviewCanvas(props),
+      this.hasSize() && this.loadOriginalImage(props),
+    ].filter(Boolean))
+      .then(() => {
+        this.setState({ loading: false, error: false });
+        this.clearPreviewCanvas();
+      })
+      .catch(() => this.setState({ loading: false, error: true }));
+  }
+
+  loadPreviewCanvas = ({ previewSrc, width, height }) => new Promise((resolve, reject) => {
+    const image = new Image();
+    const removeEventListeners = () => {
+      image.removeEventListener('error', handleError);
+      image.removeEventListener('load', handleLoad);
+    };
+    const handleError = () => {
+      removeEventListeners();
+      reject();
+    };
+    const handleLoad = () => {
+      removeEventListeners();
+      this.canvasContext.drawImage(image, 0, 0, width, height);
+      resolve();
+    };
+    image.addEventListener('error', handleError);
+    image.addEventListener('load', handleLoad);
+    image.src = previewSrc;
+    this.removers.push(removeEventListeners);
+  })
+
+  clearPreviewCanvas () {
+    const { width, height } = this.canvas;
+    this.canvasContext.clearRect(0, 0, width, height);
+  }
+
+  loadOriginalImage = ({ src }) => new Promise((resolve, reject) => {
+    const image = new Image();
+    const removeEventListeners = () => {
+      image.removeEventListener('error', handleError);
+      image.removeEventListener('load', handleLoad);
+    };
+    const handleError = () => {
+      removeEventListeners();
+      reject();
+    };
+    const handleLoad = () => {
+      removeEventListeners();
+      resolve();
+    };
+    image.addEventListener('error', handleError);
+    image.addEventListener('load', handleLoad);
+    image.src = src;
+    this.removers.push(removeEventListeners);
+  });
+
+  removeEventListeners () {
+    this.removers.forEach(listeners => listeners());
+    this.removers = [];
+  }
+
+  hasSize () {
+    const { width, height } = this.props;
+    return typeof width === 'number' && typeof height === 'number';
+  }
+
+  setCanvasRef = c => {
+    this.canvas = c;
+  }
+
+  render () {
+    const { alt, src, width, height } = this.props;
+    const { loading } = this.state;
+
+    const className = classNames('image-loader', {
+      'image-loader--loading': loading,
+      'image-loader--amorphous': !this.hasSize(),
+    });
+
+    return (
+      <div className={className}>
+        <canvas
+          className='image-loader__preview-canvas'
+          width={width}
+          height={height}
+          ref={this.setCanvasRef}
+          style={{ opacity: loading ? 1 : 0 }}
+        />
+
+        {!loading && (
+          <img
+            alt={alt}
+            className='image-loader__img'
+            src={src}
+            width={width}
+            height={height}
+          />
+        )}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/media_modal.js b/app/javascript/mastodon/features/ui/components/media_modal.js
new file mode 100644
index 00000000000..f41a830891e
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/media_modal.js
@@ -0,0 +1,126 @@
+import React from 'react';
+import ReactSwipeableViews from 'react-swipeable-views';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import ExtendedVideoPlayer from '../../../components/extended_video_player';
+import { defineMessages, injectIntl } from 'react-intl';
+import IconButton from '../../../components/icon_button';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import ImageLoader from './image_loader';
+
+const messages = defineMessages({
+  close: { id: 'lightbox.close', defaultMessage: 'Close' },
+  previous: { id: 'lightbox.previous', defaultMessage: 'Previous' },
+  next: { id: 'lightbox.next', defaultMessage: 'Next' },
+});
+
+@injectIntl
+export default class MediaModal extends ImmutablePureComponent {
+
+  static propTypes = {
+    media: ImmutablePropTypes.list.isRequired,
+    index: PropTypes.number.isRequired,
+    onClose: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  state = {
+    index: null,
+  };
+
+  handleSwipe = (index) => {
+    this.setState({ index: index % this.props.media.size });
+  }
+
+  handleNextClick = () => {
+    this.setState({ index: (this.getIndex() + 1) % this.props.media.size });
+  }
+
+  handlePrevClick = () => {
+    this.setState({ index: (this.props.media.size + this.getIndex() - 1) % this.props.media.size });
+  }
+
+  handleChangeIndex = (e) => {
+    const index = Number(e.currentTarget.getAttribute('data-index'));
+    this.setState({ index: index % this.props.media.size });
+  }
+
+  handleKeyUp = (e) => {
+    switch(e.key) {
+    case 'ArrowLeft':
+      this.handlePrevClick();
+      break;
+    case 'ArrowRight':
+      this.handleNextClick();
+      break;
+    }
+  }
+
+  componentDidMount () {
+    window.addEventListener('keyup', this.handleKeyUp, false);
+  }
+
+  componentWillUnmount () {
+    window.removeEventListener('keyup', this.handleKeyUp);
+  }
+
+  getIndex () {
+    return this.state.index !== null ? this.state.index : this.props.index;
+  }
+
+  render () {
+    const { media, intl, onClose } = this.props;
+
+    const index = this.getIndex();
+    let pagination = [];
+
+    const leftNav  = media.size > 1 && <button tabIndex='0' className='modal-container__nav modal-container__nav--left' onClick={this.handlePrevClick} aria-label={intl.formatMessage(messages.previous)}><i className='fa fa-fw fa-chevron-left' /></button>;
+    const rightNav = media.size > 1 && <button tabIndex='0' className='modal-container__nav  modal-container__nav--right' onClick={this.handleNextClick} aria-label={intl.formatMessage(messages.next)}><i className='fa fa-fw fa-chevron-right' /></button>;
+
+    if (media.size > 1) {
+      pagination = media.map((item, i) => {
+        const classes = ['media-modal__button'];
+        if (i === index) {
+          classes.push('media-modal__button--active');
+        }
+        return (<li className='media-modal__page-dot' key={i}><button tabIndex='0' className={classes.join(' ')} onClick={this.handleChangeIndex} data-index={i}>{i + 1}</button></li>);
+      });
+    }
+
+    const content = media.map((image) => {
+      const width  = image.getIn(['meta', 'original', 'width']) || null;
+      const height = image.getIn(['meta', 'original', 'height']) || null;
+
+      if (image.get('type') === 'image') {
+        return <ImageLoader previewSrc={image.get('preview_url')} src={image.get('url')} width={width} height={height} alt={image.get('description')} key={image.get('preview_url')} />;
+      } else if (image.get('type') === 'gifv') {
+        return <ExtendedVideoPlayer src={image.get('url')} muted controls={false} width={width} height={height} key={image.get('preview_url')} alt={image.get('description')} />;
+      }
+
+      return null;
+    }).toArray();
+
+    const containerStyle = {
+      alignItems: 'center', // center vertically
+    };
+
+    return (
+      <div className='modal-root__modal media-modal'>
+        {leftNav}
+
+        <div className='media-modal__content'>
+          <IconButton className='media-modal__close' title={intl.formatMessage(messages.close)} icon='times' onClick={onClose} size={16} />
+          <ReactSwipeableViews containerStyle={containerStyle} onChangeIndex={this.handleSwipe} index={index}>
+            {content}
+          </ReactSwipeableViews>
+        </div>
+        <ul className='media-modal__pagination'>
+          {pagination}
+        </ul>
+
+        {rightNav}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/modal_loading.js b/app/javascript/mastodon/features/ui/components/modal_loading.js
new file mode 100644
index 00000000000..f403ca4c9e9
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/modal_loading.js
@@ -0,0 +1,20 @@
+import React from 'react';
+
+import LoadingIndicator from '../../../components/loading_indicator';
+
+// Keep the markup in sync with <BundleModalError />
+// (make sure they have the same dimensions)
+const ModalLoading = () => (
+  <div className='modal-root__modal error-modal'>
+    <div className='error-modal__body'>
+      <LoadingIndicator />
+    </div>
+    <div className='error-modal__footer'>
+      <div>
+        <button className='error-modal__nav onboarding-modal__skip' />
+      </div>
+    </div>
+  </div>
+);
+
+export default ModalLoading;
diff --git a/app/javascript/mastodon/features/ui/components/modal_root.js b/app/javascript/mastodon/features/ui/components/modal_root.js
new file mode 100644
index 00000000000..79d86370ec4
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/modal_root.js
@@ -0,0 +1,127 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import BundleContainer from '../containers/bundle_container';
+import BundleModalError from './bundle_modal_error';
+import ModalLoading from './modal_loading';
+import ActionsModal from './actions_modal';
+import MediaModal from './media_modal';
+import VideoModal from './video_modal';
+import BoostModal from './boost_modal';
+import ConfirmationModal from './confirmation_modal';
+import {
+  OnboardingModal,
+  MuteModal,
+  ReportModal,
+  EmbedModal,
+} from '../../../features/ui/util/async-components';
+
+const MODAL_COMPONENTS = {
+  'MEDIA': () => Promise.resolve({ default: MediaModal }),
+  'ONBOARDING': OnboardingModal,
+  'VIDEO': () => Promise.resolve({ default: VideoModal }),
+  'BOOST': () => Promise.resolve({ default: BoostModal }),
+  'CONFIRM': () => Promise.resolve({ default: ConfirmationModal }),
+  'MUTE': MuteModal,
+  'REPORT': ReportModal,
+  'ACTIONS': () => Promise.resolve({ default: ActionsModal }),
+  'EMBED': EmbedModal,
+};
+
+export default class ModalRoot extends React.PureComponent {
+
+  static propTypes = {
+    type: PropTypes.string,
+    props: PropTypes.object,
+    onClose: PropTypes.func.isRequired,
+  };
+
+  state = {
+    revealed: false,
+  };
+
+  handleKeyUp = (e) => {
+    if ((e.key === 'Escape' || e.key === 'Esc' || e.keyCode === 27)
+         && !!this.props.type) {
+      this.props.onClose();
+    }
+  }
+
+  componentDidMount () {
+    window.addEventListener('keyup', this.handleKeyUp, false);
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (!!nextProps.type && !this.props.type) {
+      this.activeElement = document.activeElement;
+
+      this.getSiblings().forEach(sibling => sibling.setAttribute('inert', true));
+    } else if (!nextProps.type) {
+      this.setState({ revealed: false });
+    }
+  }
+
+  componentDidUpdate (prevProps) {
+    if (!this.props.type && !!prevProps.type) {
+      this.getSiblings().forEach(sibling => sibling.removeAttribute('inert'));
+      this.activeElement.focus();
+      this.activeElement = null;
+    }
+    if (this.props.type) {
+      requestAnimationFrame(() => {
+        this.setState({ revealed: true });
+      });
+    }
+  }
+
+  componentWillUnmount () {
+    window.removeEventListener('keyup', this.handleKeyUp);
+  }
+
+  getSiblings = () => {
+    return Array(...this.node.parentElement.childNodes).filter(node => node !== this.node);
+  }
+
+  setRef = ref => {
+    this.node = ref;
+  }
+
+  renderLoading = modalId => () => {
+    return ['MEDIA', 'VIDEO', 'BOOST', 'CONFIRM', 'ACTIONS'].indexOf(modalId) === -1 ? <ModalLoading /> : null;
+  }
+
+  renderError = (props) => {
+    const { onClose } = this.props;
+
+    return <BundleModalError {...props} onClose={onClose} />;
+  }
+
+  render () {
+    const { type, props, onClose } = this.props;
+    const { revealed } = this.state;
+    const visible = !!type;
+
+    if (!visible) {
+      return (
+        <div className='modal-root' ref={this.setRef} style={{ opacity: 0 }} />
+      );
+    }
+
+    return (
+      <div className='modal-root' ref={this.setRef} style={{ opacity: revealed ? 1 : 0 }}>
+        <div style={{ pointerEvents: visible ? 'auto' : 'none' }}>
+          <div role='presentation' className='modal-root__overlay' onClick={onClose} />
+          <div role='dialog' className='modal-root__container'>
+            {
+              visible ?
+                (<BundleContainer fetchComponent={MODAL_COMPONENTS[type]} loading={this.renderLoading(type)} error={this.renderError} renderDelay={200}>
+                  {(SpecificComponent) => <SpecificComponent {...props} onClose={onClose} />}
+                </BundleContainer>) :
+              null
+            }
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/mute_modal.js b/app/javascript/mastodon/features/ui/components/mute_modal.js
new file mode 100644
index 00000000000..73e48cf09b1
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/mute_modal.js
@@ -0,0 +1,105 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import { injectIntl, FormattedMessage } from 'react-intl';
+import Toggle from 'react-toggle';
+import Button from '../../../components/button';
+import { closeModal } from '../../../actions/modal';
+import { muteAccount } from '../../../actions/accounts';
+import { toggleHideNotifications } from '../../../actions/mutes';
+
+
+const mapStateToProps = state => {
+  return {
+    isSubmitting: state.getIn(['reports', 'new', 'isSubmitting']),
+    account: state.getIn(['mutes', 'new', 'account']),
+    notifications: state.getIn(['mutes', 'new', 'notifications']),
+  };
+};
+
+const mapDispatchToProps = dispatch => {
+  return {
+    onConfirm(account, notifications) {
+      dispatch(muteAccount(account.get('id'), notifications));
+    },
+
+    onClose() {
+      dispatch(closeModal());
+    },
+
+    onToggleNotifications() {
+      dispatch(toggleHideNotifications());
+    },
+  };
+};
+
+@connect(mapStateToProps, mapDispatchToProps)
+@injectIntl
+export default class MuteModal extends React.PureComponent {
+
+  static propTypes = {
+    isSubmitting: PropTypes.bool.isRequired,
+    account: PropTypes.object.isRequired,
+    notifications: PropTypes.bool.isRequired,
+    onClose: PropTypes.func.isRequired,
+    onConfirm: PropTypes.func.isRequired,
+    onToggleNotifications: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  componentDidMount() {
+    this.button.focus();
+  }
+
+  handleClick = () => {
+    this.props.onClose();
+    this.props.onConfirm(this.props.account, this.props.notifications);
+  }
+
+  handleCancel = () => {
+    this.props.onClose();
+  }
+
+  setRef = (c) => {
+    this.button = c;
+  }
+
+  toggleNotifications = () => {
+    this.props.onToggleNotifications();
+  }
+
+  render () {
+    const { account, notifications } = this.props;
+
+    return (
+      <div className='modal-root__modal mute-modal'>
+        <div className='mute-modal__container'>
+          <p>
+            <FormattedMessage
+              id='confirmations.mute.message'
+              defaultMessage='Are you sure you want to mute {name}?'
+              values={{ name: <strong>@{account.get('acct')}</strong> }}
+            />
+          </p>
+          <div>
+            <label htmlFor='mute-modal__hide-notifications-checkbox'>
+              <FormattedMessage id='mute_modal.hide_notifications' defaultMessage='Hide notifications from this user?' />
+              {' '}
+              <Toggle id='mute-modal__hide-notifications-checkbox' checked={notifications} onChange={this.toggleNotifications} />
+            </label>
+          </div>
+        </div>
+
+        <div className='mute-modal__action-bar'>
+          <Button onClick={this.handleCancel} className='mute-modal__cancel-button'>
+            <FormattedMessage id='confirmation_modal.cancel' defaultMessage='Cancel' />
+          </Button>
+          <Button onClick={this.handleClick} ref={this.setRef}>
+            <FormattedMessage id='confirmations.mute.confirm' defaultMessage='Mute' />
+          </Button>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/onboarding_modal.js b/app/javascript/mastodon/features/ui/components/onboarding_modal.js
new file mode 100644
index 00000000000..54673e223e5
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/onboarding_modal.js
@@ -0,0 +1,318 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import ReactSwipeableViews from 'react-swipeable-views';
+import classNames from 'classnames';
+import Permalink from '../../../components/permalink';
+import ComposeForm from '../../compose/components/compose_form';
+import Search from '../../compose/components/search';
+import NavigationBar from '../../compose/components/navigation_bar';
+import ColumnHeader from './column_header';
+import { List as ImmutableList } from 'immutable';
+import { me } from '../../../initial_state';
+
+const noop = () => { };
+
+const messages = defineMessages({
+  home_title: { id: 'column.home', defaultMessage: 'Home' },
+  notifications_title: { id: 'column.notifications', defaultMessage: 'Notifications' },
+  local_title: { id: 'column.community', defaultMessage: 'Local timeline' },
+  federated_title: { id: 'column.public', defaultMessage: 'Federated timeline' },
+});
+
+const PageOne = ({ acct, domain }) => (
+  <div className='onboarding-modal__page onboarding-modal__page-one'>
+    <div style={{ flex: '0 0 auto' }}>
+      <div className='onboarding-modal__page-one__elephant-friend' />
+    </div>
+
+    <div>
+      <h1><FormattedMessage id='onboarding.page_one.welcome' defaultMessage='Welcome to Mastodon!' /></h1>
+      <p><FormattedMessage id='onboarding.page_one.federation' defaultMessage='Mastodon is a network of independent servers joining up to make one larger social network. We call these servers instances.' /></p>
+      <p><FormattedMessage id='onboarding.page_one.handle' defaultMessage='You are on {domain}, so your full handle is {handle}' values={{ domain, handle: <strong>@{acct}@{domain}</strong> }} /></p>
+    </div>
+  </div>
+);
+
+PageOne.propTypes = {
+  acct: PropTypes.string.isRequired,
+  domain: PropTypes.string.isRequired,
+};
+
+const PageTwo = ({ myAccount }) => (
+  <div className='onboarding-modal__page onboarding-modal__page-two'>
+    <div className='figure non-interactive'>
+      <div className='pseudo-drawer'>
+        <NavigationBar account={myAccount} />
+      </div>
+      <ComposeForm
+        text='Awoo! #introductions'
+        suggestions={ImmutableList()}
+        mentionedDomains={[]}
+        spoiler={false}
+        onChange={noop}
+        onSubmit={noop}
+        onPaste={noop}
+        onPickEmoji={noop}
+        onChangeSpoilerText={noop}
+        onClearSuggestions={noop}
+        onFetchSuggestions={noop}
+        onSuggestionSelected={noop}
+        showSearch
+      />
+    </div>
+
+    <p><FormattedMessage id='onboarding.page_two.compose' defaultMessage='Write posts from the compose column. You can upload images, change privacy settings, and add content warnings with the icons below.' /></p>
+  </div>
+);
+
+PageTwo.propTypes = {
+  myAccount: ImmutablePropTypes.map.isRequired,
+};
+
+const PageThree = ({ myAccount }) => (
+  <div className='onboarding-modal__page onboarding-modal__page-three'>
+    <div className='figure non-interactive'>
+      <Search
+        value=''
+        onChange={noop}
+        onSubmit={noop}
+        onClear={noop}
+        onShow={noop}
+      />
+
+      <div className='pseudo-drawer'>
+        <NavigationBar account={myAccount} />
+      </div>
+    </div>
+
+    <p><FormattedMessage id='onboarding.page_three.search' defaultMessage='Use the search bar to find people and look at hashtags, such as {illustration} and {introductions}. To look for a person who is not on this instance, use their full handle.' values={{ illustration: <Permalink to='/timelines/tag/illustration' href='/tags/illustration'>#illustration</Permalink>, introductions: <Permalink to='/timelines/tag/introductions' href='/tags/introductions'>#introductions</Permalink> }} /></p>
+    <p><FormattedMessage id='onboarding.page_three.profile' defaultMessage='Edit your profile to change your avatar, bio, and display name. There, you will also find other preferences.' /></p>
+  </div>
+);
+
+PageThree.propTypes = {
+  myAccount: ImmutablePropTypes.map.isRequired,
+};
+
+const PageFour = ({ domain, intl }) => (
+  <div className='onboarding-modal__page onboarding-modal__page-four'>
+    <div className='onboarding-modal__page-four__columns'>
+      <div className='row'>
+        <div>
+          <div className='figure non-interactive'><ColumnHeader icon='home' type={intl.formatMessage(messages.home_title)} /></div>
+          <p><FormattedMessage id='onboarding.page_four.home' defaultMessage='The home timeline shows posts from people you follow.' /></p>
+        </div>
+
+        <div>
+          <div className='figure non-interactive'><ColumnHeader icon='bell' type={intl.formatMessage(messages.notifications_title)} /></div>
+          <p><FormattedMessage id='onboarding.page_four.notifications' defaultMessage='The notifications column shows when someone interacts with you.' /></p>
+        </div>
+      </div>
+
+      <div className='row'>
+        <div>
+          <div className='figure non-interactive' style={{ marginBottom: 0 }}><ColumnHeader icon='users' type={intl.formatMessage(messages.local_title)} /></div>
+        </div>
+
+        <div>
+          <div className='figure non-interactive' style={{ marginBottom: 0 }}><ColumnHeader icon='globe' type={intl.formatMessage(messages.federated_title)} /></div>
+        </div>
+      </div>
+
+      <p><FormattedMessage id='onboarding.page_five.public_timelines' defaultMessage='The local timeline shows public posts from everyone on {domain}. The federated timeline shows public posts from everyone who people on {domain} follow. These are the Public Timelines, a great way to discover new people.' values={{ domain }} /></p>
+    </div>
+  </div>
+);
+
+PageFour.propTypes = {
+  domain: PropTypes.string.isRequired,
+  intl: PropTypes.object.isRequired,
+};
+
+const PageSix = ({ admin, domain }) => {
+  let adminSection = '';
+
+  if (admin) {
+    adminSection = (
+      <p>
+        <FormattedMessage id='onboarding.page_six.admin' defaultMessage="Your instance's admin is {admin}." values={{ admin: <Permalink href={admin.get('url')} to={`/accounts/${admin.get('id')}`}>@{admin.get('acct')}</Permalink> }} />
+        <br />
+        <FormattedMessage id='onboarding.page_six.read_guidelines' defaultMessage="Please read {domain}'s {guidelines}!" values={{ domain, guidelines: <a href='/about/more' target='_blank'><FormattedMessage id='onboarding.page_six.guidelines' defaultMessage='community guidelines' /></a> }} />
+      </p>
+    );
+  }
+
+  return (
+    <div className='onboarding-modal__page onboarding-modal__page-six'>
+      <h1><FormattedMessage id='onboarding.page_six.almost_done' defaultMessage='Almost done...' /></h1>
+      {adminSection}
+      <p><FormattedMessage id='onboarding.page_six.github' defaultMessage='Mastodon is free open-source software. You can report bugs, request features, or contribute to the code on {github}.' values={{ github: <a href='https://github.com/tootsuite/mastodon' target='_blank' rel='noopener'>GitHub</a> }} /></p>
+      <p><FormattedMessage id='onboarding.page_six.apps_available' defaultMessage='There are {apps} available for iOS, Android and other platforms.' values={{ apps: <a href='https://github.com/tootsuite/documentation/blob/master/Using-Mastodon/Apps.md' target='_blank' rel='noopener'><FormattedMessage id='onboarding.page_six.various_app' defaultMessage='mobile apps' /></a> }} /></p>
+      <p><em><FormattedMessage id='onboarding.page_six.appetoot' defaultMessage='Bon Appetoot!' /></em></p>
+    </div>
+  );
+};
+
+PageSix.propTypes = {
+  admin: ImmutablePropTypes.map,
+  domain: PropTypes.string.isRequired,
+};
+
+const mapStateToProps = state => ({
+  myAccount: state.getIn(['accounts', me]),
+  admin: state.getIn(['accounts', state.getIn(['meta', 'admin'])]),
+  domain: state.getIn(['meta', 'domain']),
+});
+
+@connect(mapStateToProps)
+@injectIntl
+export default class OnboardingModal extends React.PureComponent {
+
+  static propTypes = {
+    onClose: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+    myAccount: ImmutablePropTypes.map.isRequired,
+    domain: PropTypes.string.isRequired,
+    admin: ImmutablePropTypes.map,
+  };
+
+  state = {
+    currentIndex: 0,
+  };
+
+  componentWillMount() {
+    const { myAccount, admin, domain, intl } = this.props;
+    this.pages = [
+      <PageOne acct={myAccount.get('acct')} domain={domain} />,
+      <PageTwo myAccount={myAccount} />,
+      <PageThree myAccount={myAccount} />,
+      <PageFour domain={domain} intl={intl} />,
+      <PageSix admin={admin} domain={domain} />,
+    ];
+  };
+
+  componentDidMount() {
+    window.addEventListener('keyup', this.handleKeyUp);
+  }
+
+  componentWillUnmount() {
+    window.addEventListener('keyup', this.handleKeyUp);
+  }
+
+  handleSkip = (e) => {
+    e.preventDefault();
+    this.props.onClose();
+  }
+
+  handleDot = (e) => {
+    const i = Number(e.currentTarget.getAttribute('data-index'));
+    e.preventDefault();
+    this.setState({ currentIndex: i });
+  }
+
+  handlePrev = () => {
+    this.setState(({ currentIndex }) => ({
+      currentIndex: Math.max(0, currentIndex - 1),
+    }));
+  }
+
+  handleNext = () => {
+    const { pages } = this;
+    this.setState(({ currentIndex }) => ({
+      currentIndex: Math.min(currentIndex + 1, pages.length - 1),
+    }));
+  }
+
+  handleSwipe = (index) => {
+    this.setState({ currentIndex: index });
+  }
+
+  handleKeyUp = ({ key }) => {
+    switch (key) {
+    case 'ArrowLeft':
+      this.handlePrev();
+      break;
+    case 'ArrowRight':
+      this.handleNext();
+      break;
+    }
+  }
+
+  handleClose = () => {
+    this.props.onClose();
+  }
+
+  render () {
+    const { pages } = this;
+    const { currentIndex } = this.state;
+    const hasMore = currentIndex < pages.length - 1;
+
+    const nextOrDoneBtn = hasMore ? (
+      <button
+        onClick={this.handleNext}
+        className='onboarding-modal__nav onboarding-modal__next'
+      >
+        <FormattedMessage id='onboarding.next' defaultMessage='Next' />
+      </button>
+    ) : (
+      <button
+        onClick={this.handleClose}
+        className='onboarding-modal__nav onboarding-modal__done'
+      >
+        <FormattedMessage id='onboarding.done' defaultMessage='Done' />
+      </button>
+    );
+
+    return (
+      <div className='modal-root__modal onboarding-modal'>
+        <ReactSwipeableViews index={currentIndex} onChangeIndex={this.handleSwipe} className='onboarding-modal__pager'>
+          {pages.map((page, i) => {
+            const className = classNames('onboarding-modal__page__wrapper', {
+              'onboarding-modal__page__wrapper--active': i === currentIndex,
+            });
+            return (
+              <div key={i} className={className}>{page}</div>
+            );
+          })}
+        </ReactSwipeableViews>
+
+        <div className='onboarding-modal__paginator'>
+          <div>
+            <button
+              onClick={this.handleSkip}
+              className='onboarding-modal__nav onboarding-modal__skip'
+            >
+              <FormattedMessage id='onboarding.skip' defaultMessage='Skip' />
+            </button>
+          </div>
+
+          <div className='onboarding-modal__dots'>
+            {pages.map((_, i) => {
+              const className = classNames('onboarding-modal__dot', {
+                active: i === currentIndex,
+              });
+              return (
+                <div
+                  key={`dot-${i}`}
+                  role='button'
+                  tabIndex='0'
+                  data-index={i}
+                  onClick={this.handleDot}
+                  className={className}
+                />
+              );
+            })}
+          </div>
+
+          <div>
+            {nextOrDoneBtn}
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/report_modal.js b/app/javascript/mastodon/features/ui/components/report_modal.js
new file mode 100644
index 00000000000..b5dfa422e43
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/report_modal.js
@@ -0,0 +1,105 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import { changeReportComment, submitReport } from '../../../actions/reports';
+import { refreshAccountTimeline } from '../../../actions/timelines';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { makeGetAccount } from '../../../selectors';
+import { defineMessages, FormattedMessage, injectIntl } from 'react-intl';
+import StatusCheckBox from '../../report/containers/status_check_box_container';
+import { OrderedSet } from 'immutable';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import Button from '../../../components/button';
+
+const messages = defineMessages({
+  placeholder: { id: 'report.placeholder', defaultMessage: 'Additional comments' },
+  submit: { id: 'report.submit', defaultMessage: 'Submit' },
+});
+
+const makeMapStateToProps = () => {
+  const getAccount = makeGetAccount();
+
+  const mapStateToProps = state => {
+    const accountId = state.getIn(['reports', 'new', 'account_id']);
+
+    return {
+      isSubmitting: state.getIn(['reports', 'new', 'isSubmitting']),
+      account: getAccount(state, accountId),
+      comment: state.getIn(['reports', 'new', 'comment']),
+      statusIds: OrderedSet(state.getIn(['timelines', `account:${accountId}`, 'items'])).union(state.getIn(['reports', 'new', 'status_ids'])),
+    };
+  };
+
+  return mapStateToProps;
+};
+
+@connect(makeMapStateToProps)
+@injectIntl
+export default class ReportModal extends ImmutablePureComponent {
+
+  static propTypes = {
+    isSubmitting: PropTypes.bool,
+    account: ImmutablePropTypes.map,
+    statusIds: ImmutablePropTypes.orderedSet.isRequired,
+    comment: PropTypes.string.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  handleCommentChange = (e) => {
+    this.props.dispatch(changeReportComment(e.target.value));
+  }
+
+  handleSubmit = () => {
+    this.props.dispatch(submitReport());
+  }
+
+  componentDidMount () {
+    this.props.dispatch(refreshAccountTimeline(this.props.account.get('id')));
+  }
+
+  componentWillReceiveProps (nextProps) {
+    if (this.props.account !== nextProps.account && nextProps.account) {
+      this.props.dispatch(refreshAccountTimeline(nextProps.account.get('id')));
+    }
+  }
+
+  render () {
+    const { account, comment, intl, statusIds, isSubmitting } = this.props;
+
+    if (!account) {
+      return null;
+    }
+
+    return (
+      <div className='modal-root__modal report-modal'>
+        <div className='report-modal__target'>
+          <FormattedMessage id='report.target' defaultMessage='Report {target}' values={{ target: <strong>{account.get('acct')}</strong> }} />
+        </div>
+
+        <div className='report-modal__container'>
+          <div className='report-modal__statuses'>
+            <div>
+              {statusIds.map(statusId => <StatusCheckBox id={statusId} key={statusId} disabled={isSubmitting} />)}
+            </div>
+          </div>
+
+          <div className='report-modal__comment'>
+            <textarea
+              className='setting-text light'
+              placeholder={intl.formatMessage(messages.placeholder)}
+              value={comment}
+              onChange={this.handleCommentChange}
+              disabled={isSubmitting}
+            />
+          </div>
+        </div>
+
+        <div className='report-modal__action-bar'>
+          <Button disabled={isSubmitting} text={intl.formatMessage(messages.submit)} onClick={this.handleSubmit} />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/tabs_bar.js b/app/javascript/mastodon/features/ui/components/tabs_bar.js
new file mode 100644
index 00000000000..7694e5ab336
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/tabs_bar.js
@@ -0,0 +1,84 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { NavLink } from 'react-router-dom';
+import { FormattedMessage, injectIntl } from 'react-intl';
+import { debounce } from 'lodash';
+import { isUserTouching } from '../../../is_mobile';
+
+export const links = [
+  <NavLink className='tabs-bar__link primary' to='/statuses/new' data-preview-title-id='tabs_bar.compose' data-preview-icon='pencil' ><i className='fa fa-fw fa-pencil' /><FormattedMessage id='tabs_bar.compose' defaultMessage='Compose' /></NavLink>,
+  <NavLink className='tabs-bar__link primary' to='/timelines/home' data-preview-title-id='column.home' data-preview-icon='home' ><i className='fa fa-fw fa-home' /><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></NavLink>,
+  <NavLink className='tabs-bar__link primary' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><i className='fa fa-fw fa-bell' /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>,
+
+  <NavLink className='tabs-bar__link secondary' to='/timelines/public/local' data-preview-title-id='column.community' data-preview-icon='users' ><i className='fa fa-fw fa-users' /><FormattedMessage id='tabs_bar.local_timeline' defaultMessage='Local' /></NavLink>,
+  <NavLink className='tabs-bar__link secondary' exact to='/timelines/public' data-preview-title-id='column.public' data-preview-icon='globe' ><i className='fa fa-fw fa-globe' /><FormattedMessage id='tabs_bar.federated_timeline' defaultMessage='Federated' /></NavLink>,
+
+  <NavLink className='tabs-bar__link primary' style={{ flexGrow: '0', flexBasis: '30px' }} to='/getting-started' data-preview-title-id='getting_started.heading' data-preview-icon='asterisk' ><i className='fa fa-fw fa-asterisk' /></NavLink>,
+];
+
+export function getIndex (path) {
+  return links.findIndex(link => link.props.to === path);
+}
+
+export function getLink (index) {
+  return links[index].props.to;
+}
+
+@injectIntl
+export default class TabsBar extends React.Component {
+
+  static contextTypes = {
+    router: PropTypes.object.isRequired,
+  }
+
+  static propTypes = {
+    intl: PropTypes.object.isRequired,
+  }
+
+  setRef = ref => {
+    this.node = ref;
+  }
+
+  handleClick = (e) => {
+    // Only apply optimization for touch devices, which we assume are slower
+    // We thus avoid the 250ms delay for non-touch devices and the lag for touch devices
+    if (isUserTouching()) {
+      e.preventDefault();
+      e.persist();
+
+      requestAnimationFrame(() => {
+        const tabs = Array(...this.node.querySelectorAll('.tabs-bar__link'));
+        const currentTab = tabs.find(tab => tab.classList.contains('active'));
+        const nextTab = tabs.find(tab => tab.contains(e.target));
+        const { props: { to } } = links[Array(...this.node.childNodes).indexOf(nextTab)];
+
+
+        if (currentTab !== nextTab) {
+          if (currentTab) {
+            currentTab.classList.remove('active');
+          }
+
+          const listener = debounce(() => {
+            nextTab.removeEventListener('transitionend', listener);
+            this.context.router.history.push(to);
+          }, 50);
+
+          nextTab.addEventListener('transitionend', listener);
+          nextTab.classList.add('active');
+        }
+      });
+    }
+
+  }
+
+  render () {
+    const { intl: { formatMessage } } = this.props;
+
+    return (
+      <nav className='tabs-bar' ref={this.setRef}>
+        {links.map(link => React.cloneElement(link, { key: link.props.to, onClick: this.handleClick, 'aria-label': formatMessage({ id: link.props['data-preview-title-id'] }) }))}
+      </nav>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/upload_area.js b/app/javascript/mastodon/features/ui/components/upload_area.js
new file mode 100644
index 00000000000..8b9a26270bd
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/upload_area.js
@@ -0,0 +1,52 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import Motion from '../../ui/util/optional_motion';
+import spring from 'react-motion/lib/spring';
+import { FormattedMessage } from 'react-intl';
+
+export default class UploadArea extends React.PureComponent {
+
+  static propTypes = {
+    active: PropTypes.bool,
+    onClose: PropTypes.func,
+  };
+
+  handleKeyUp = (e) => {
+    const keyCode = e.keyCode;
+    if (this.props.active) {
+      switch(keyCode) {
+      case 27:
+        e.preventDefault();
+        e.stopPropagation();
+        this.props.onClose();
+        break;
+      }
+    }
+  }
+
+  componentDidMount () {
+    window.addEventListener('keyup', this.handleKeyUp, false);
+  }
+
+  componentWillUnmount () {
+    window.removeEventListener('keyup', this.handleKeyUp);
+  }
+
+  render () {
+    const { active } = this.props;
+
+    return (
+      <Motion defaultStyle={{ backgroundOpacity: 0, backgroundScale: 0.95 }} style={{ backgroundOpacity: spring(active ? 1 : 0, { stiffness: 150, damping: 15 }), backgroundScale: spring(active ? 1 : 0.95, { stiffness: 200, damping: 3 }) }}>
+        {({ backgroundOpacity, backgroundScale }) =>
+          <div className='upload-area' style={{ visibility: active ? 'visible' : 'hidden', opacity: backgroundOpacity }}>
+            <div className='upload-area__drop'>
+              <div className='upload-area__background' style={{ transform: `scale(${backgroundScale})` }} />
+              <div className='upload-area__content'><FormattedMessage id='upload_area.title' defaultMessage='Drag & drop to upload' /></div>
+            </div>
+          </div>
+        }
+      </Motion>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/video_modal.js b/app/javascript/mastodon/features/ui/components/video_modal.js
new file mode 100644
index 00000000000..1437deeb0b0
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/video_modal.js
@@ -0,0 +1,33 @@
+import React from 'react';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+import Video from '../../video';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+export default class VideoModal extends ImmutablePureComponent {
+
+  static propTypes = {
+    media: ImmutablePropTypes.map.isRequired,
+    time: PropTypes.number,
+    onClose: PropTypes.func.isRequired,
+  };
+
+  render () {
+    const { media, time, onClose } = this.props;
+
+    return (
+      <div className='modal-root__modal media-modal'>
+        <div>
+          <Video
+            preview={media.get('preview_url')}
+            src={media.get('url')}
+            startTime={time}
+            onCloseVideo={onClose}
+            description={media.get('description')}
+          />
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/containers/bundle_container.js b/app/javascript/mastodon/features/ui/containers/bundle_container.js
new file mode 100644
index 00000000000..7e3f0c3a6bb
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/containers/bundle_container.js
@@ -0,0 +1,19 @@
+import { connect } from 'react-redux';
+
+import Bundle from '../components/bundle';
+
+import { fetchBundleRequest, fetchBundleSuccess, fetchBundleFail } from '../../../actions/bundles';
+
+const mapDispatchToProps = dispatch => ({
+  onFetch () {
+    dispatch(fetchBundleRequest());
+  },
+  onFetchSuccess () {
+    dispatch(fetchBundleSuccess());
+  },
+  onFetchFail (error) {
+    dispatch(fetchBundleFail(error));
+  },
+});
+
+export default connect(null, mapDispatchToProps)(Bundle);
diff --git a/app/javascript/mastodon/features/ui/containers/columns_area_container.js b/app/javascript/mastodon/features/ui/containers/columns_area_container.js
new file mode 100644
index 00000000000..95f95618b2c
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/containers/columns_area_container.js
@@ -0,0 +1,8 @@
+import { connect } from 'react-redux';
+import ColumnsArea from '../components/columns_area';
+
+const mapStateToProps = state => ({
+  columns: state.getIn(['settings', 'columns']),
+});
+
+export default connect(mapStateToProps, null, null, { withRef: true })(ColumnsArea);
diff --git a/app/javascript/mastodon/features/ui/containers/loading_bar_container.js b/app/javascript/mastodon/features/ui/containers/loading_bar_container.js
new file mode 100644
index 00000000000..4bb90fb689f
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/containers/loading_bar_container.js
@@ -0,0 +1,8 @@
+import { connect }    from 'react-redux';
+import LoadingBar from 'react-redux-loading-bar';
+
+const mapStateToProps = (state) => ({
+  loading: state.get('loadingBar'),
+});
+
+export default connect(mapStateToProps)(LoadingBar.WrappedComponent);
diff --git a/app/javascript/mastodon/features/ui/containers/modal_container.js b/app/javascript/mastodon/features/ui/containers/modal_container.js
new file mode 100644
index 00000000000..2d27180f7ed
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/containers/modal_container.js
@@ -0,0 +1,16 @@
+import { connect } from 'react-redux';
+import { closeModal } from '../../../actions/modal';
+import ModalRoot from '../components/modal_root';
+
+const mapStateToProps = state => ({
+  type: state.get('modal').modalType,
+  props: state.get('modal').modalProps,
+});
+
+const mapDispatchToProps = dispatch => ({
+  onClose () {
+    dispatch(closeModal());
+  },
+});
+
+export default connect(mapStateToProps, mapDispatchToProps)(ModalRoot);
diff --git a/app/javascript/mastodon/features/ui/containers/notifications_container.js b/app/javascript/mastodon/features/ui/containers/notifications_container.js
new file mode 100644
index 00000000000..5924197f1e8
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/containers/notifications_container.js
@@ -0,0 +1,18 @@
+import { connect } from 'react-redux';
+import { NotificationStack } from 'react-notification';
+import { dismissAlert } from '../../../actions/alerts';
+import { getAlerts } from '../../../selectors';
+
+const mapStateToProps = state => ({
+  notifications: getAlerts(state),
+});
+
+const mapDispatchToProps = (dispatch) => {
+  return {
+    onDismiss: alert => {
+      dispatch(dismissAlert(alert));
+    },
+  };
+};
+
+export default connect(mapStateToProps, mapDispatchToProps)(NotificationStack);
diff --git a/app/javascript/mastodon/features/ui/containers/status_list_container.js b/app/javascript/mastodon/features/ui/containers/status_list_container.js
new file mode 100644
index 00000000000..a0aec440326
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/containers/status_list_container.js
@@ -0,0 +1,73 @@
+import { connect } from 'react-redux';
+import StatusList from '../../../components/status_list';
+import { scrollTopTimeline } from '../../../actions/timelines';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
+import { createSelector } from 'reselect';
+import { debounce } from 'lodash';
+import { me } from '../../../initial_state';
+
+const makeGetStatusIds = () => createSelector([
+  (state, { type }) => state.getIn(['settings', type], ImmutableMap()),
+  (state, { type }) => state.getIn(['timelines', type, 'items'], ImmutableList()),
+  (state)           => state.get('statuses'),
+], (columnSettings, statusIds, statuses) => {
+  const rawRegex = columnSettings.getIn(['regex', 'body'], '').trim();
+  let regex      = null;
+
+  try {
+    regex = rawRegex && new RegExp(rawRegex, 'i');
+  } catch (e) {
+    // Bad regex, don't affect filters
+  }
+
+  return statusIds.filter(id => {
+    const statusForId = statuses.get(id);
+    let showStatus    = true;
+
+    if (columnSettings.getIn(['shows', 'reblog']) === false) {
+      showStatus = showStatus && statusForId.get('reblog') === null;
+    }
+
+    if (columnSettings.getIn(['shows', 'reply']) === false) {
+      showStatus = showStatus && (statusForId.get('in_reply_to_id') === null || statusForId.get('in_reply_to_account_id') === me);
+    }
+
+    if (showStatus && regex && statusForId.get('account') !== me) {
+      const searchIndex = statusForId.get('reblog') ? statuses.getIn([statusForId.get('reblog'), 'search_index']) : statusForId.get('search_index');
+      showStatus = !regex.test(searchIndex);
+    }
+
+    return showStatus;
+  });
+});
+
+const makeMapStateToProps = () => {
+  const getStatusIds = makeGetStatusIds();
+
+  const mapStateToProps = (state, { timelineId }) => ({
+    statusIds: getStatusIds(state, { type: timelineId }),
+    isLoading: state.getIn(['timelines', timelineId, 'isLoading'], true),
+    hasMore: !!state.getIn(['timelines', timelineId, 'next']),
+  });
+
+  return mapStateToProps;
+};
+
+const mapDispatchToProps = (dispatch, { timelineId, loadMore }) => ({
+
+  onScrollToBottom: debounce(() => {
+    dispatch(scrollTopTimeline(timelineId, false));
+    loadMore();
+  }, 300, { leading: true }),
+
+  onScrollToTop: debounce(() => {
+    dispatch(scrollTopTimeline(timelineId, true));
+  }, 100),
+
+  onScroll: debounce(() => {
+    dispatch(scrollTopTimeline(timelineId, false));
+  }, 100),
+
+});
+
+export default connect(makeMapStateToProps, mapDispatchToProps)(StatusList);
diff --git a/app/javascript/mastodon/features/ui/index.js b/app/javascript/mastodon/features/ui/index.js
new file mode 100644
index 00000000000..f28b3709926
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/index.js
@@ -0,0 +1,407 @@
+import React from 'react';
+import NotificationsContainer from './containers/notifications_container';
+import PropTypes from 'prop-types';
+import LoadingBarContainer from './containers/loading_bar_container';
+import TabsBar from './components/tabs_bar';
+import ModalContainer from './containers/modal_container';
+import { connect } from 'react-redux';
+import { Redirect, withRouter } from 'react-router-dom';
+import { isMobile } from '../../is_mobile';
+import { debounce } from 'lodash';
+import { uploadCompose, resetCompose } from '../../actions/compose';
+import { refreshHomeTimeline } from '../../actions/timelines';
+import { refreshNotifications } from '../../actions/notifications';
+import { clearHeight } from '../../actions/height_cache';
+import { WrappedSwitch, WrappedRoute } from './util/react_router_helpers';
+import UploadArea from './components/upload_area';
+import ColumnsAreaContainer from './containers/columns_area_container';
+import {
+  Compose,
+  Status,
+  GettingStarted,
+  PublicTimeline,
+  CommunityTimeline,
+  AccountTimeline,
+  AccountGallery,
+  HomeTimeline,
+  Followers,
+  Following,
+  Reblogs,
+  Favourites,
+  HashtagTimeline,
+  Notifications,
+  FollowRequests,
+  GenericNotFound,
+  FavouritedStatuses,
+  Blocks,
+  Mutes,
+  PinnedStatuses,
+} from './util/async-components';
+import { HotKeys } from 'react-hotkeys';
+import { me } from '../../initial_state';
+import { defineMessages, injectIntl } from 'react-intl';
+
+// Dummy import, to make sure that <Status /> ends up in the application bundle.
+// Without this it ends up in ~8 very commonly used bundles.
+import '../../components/status';
+
+const messages = defineMessages({
+  beforeUnload: { id: 'ui.beforeunload', defaultMessage: 'Your draft will be lost if you leave Mastodon.' },
+});
+
+const mapStateToProps = state => ({
+  isComposing: state.getIn(['compose', 'is_composing']),
+  hasComposingText: state.getIn(['compose', 'text']) !== '',
+});
+
+const keyMap = {
+  new: 'n',
+  search: 's',
+  forceNew: 'option+n',
+  focusColumn: ['1', '2', '3', '4', '5', '6', '7', '8', '9'],
+  reply: 'r',
+  favourite: 'f',
+  boost: 'b',
+  mention: 'm',
+  open: ['enter', 'o'],
+  openProfile: 'p',
+  moveDown: ['down', 'j'],
+  moveUp: ['up', 'k'],
+  back: 'backspace',
+  goToHome: 'g h',
+  goToNotifications: 'g n',
+  goToLocal: 'g l',
+  goToFederated: 'g t',
+  goToStart: 'g s',
+  goToFavourites: 'g f',
+  goToPinned: 'g p',
+  goToProfile: 'g u',
+  goToBlocked: 'g b',
+  goToMuted: 'g m',
+};
+
+@connect(mapStateToProps)
+@injectIntl
+@withRouter
+export default class UI extends React.Component {
+
+  static contextTypes = {
+    router: PropTypes.object.isRequired,
+  };
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    children: PropTypes.node,
+    isComposing: PropTypes.bool,
+    hasComposingText: PropTypes.bool,
+    location: PropTypes.object,
+    intl: PropTypes.object.isRequired,
+  };
+
+  state = {
+    width: window.innerWidth,
+    draggingOver: false,
+  };
+
+  handleBeforeUnload = (e) => {
+    const { intl, isComposing, hasComposingText } = this.props;
+
+    if (isComposing && hasComposingText) {
+      // Setting returnValue to any string causes confirmation dialog.
+      // Many browsers no longer display this text to users,
+      // but we set user-friendly message for other browsers, e.g. Edge.
+      e.returnValue = intl.formatMessage(messages.beforeUnload);
+    }
+  }
+
+  handleResize = debounce(() => {
+    // The cached heights are no longer accurate, invalidate
+    this.props.dispatch(clearHeight());
+
+    this.setState({ width: window.innerWidth });
+  }, 500, {
+    trailing: true,
+  });
+
+  handleDragEnter = (e) => {
+    e.preventDefault();
+
+    if (!this.dragTargets) {
+      this.dragTargets = [];
+    }
+
+    if (this.dragTargets.indexOf(e.target) === -1) {
+      this.dragTargets.push(e.target);
+    }
+
+    if (e.dataTransfer && e.dataTransfer.types.includes('Files')) {
+      this.setState({ draggingOver: true });
+    }
+  }
+
+  handleDragOver = (e) => {
+    e.preventDefault();
+    e.stopPropagation();
+
+    try {
+      e.dataTransfer.dropEffect = 'copy';
+    } catch (err) {
+
+    }
+
+    return false;
+  }
+
+  handleDrop = (e) => {
+    e.preventDefault();
+
+    this.setState({ draggingOver: false });
+
+    if (e.dataTransfer && e.dataTransfer.files.length === 1) {
+      this.props.dispatch(uploadCompose(e.dataTransfer.files));
+    }
+  }
+
+  handleDragLeave = (e) => {
+    e.preventDefault();
+    e.stopPropagation();
+
+    this.dragTargets = this.dragTargets.filter(el => el !== e.target && this.node.contains(el));
+
+    if (this.dragTargets.length > 0) {
+      return;
+    }
+
+    this.setState({ draggingOver: false });
+  }
+
+  closeUploadModal = () => {
+    this.setState({ draggingOver: false });
+  }
+
+  handleServiceWorkerPostMessage = ({ data }) => {
+    if (data.type === 'navigate') {
+      this.context.router.history.push(data.path);
+    } else {
+      console.warn('Unknown message type:', data.type);
+    }
+  }
+
+  componentWillMount () {
+    window.addEventListener('beforeunload', this.handleBeforeUnload, false);
+    window.addEventListener('resize', this.handleResize, { passive: true });
+    document.addEventListener('dragenter', this.handleDragEnter, false);
+    document.addEventListener('dragover', this.handleDragOver, false);
+    document.addEventListener('drop', this.handleDrop, false);
+    document.addEventListener('dragleave', this.handleDragLeave, false);
+    document.addEventListener('dragend', this.handleDragEnd, false);
+
+    if ('serviceWorker' in  navigator) {
+      navigator.serviceWorker.addEventListener('message', this.handleServiceWorkerPostMessage);
+    }
+
+    this.props.dispatch(refreshHomeTimeline());
+    this.props.dispatch(refreshNotifications());
+  }
+
+  componentDidMount () {
+    this.hotkeys.__mousetrap__.stopCallback = (e, element) => {
+      return ['TEXTAREA', 'SELECT', 'INPUT'].includes(element.tagName);
+    };
+  }
+
+  shouldComponentUpdate (nextProps) {
+    if (nextProps.isComposing !== this.props.isComposing) {
+      // Avoid expensive update just to toggle a class
+      this.node.classList.toggle('is-composing', nextProps.isComposing);
+
+      return false;
+    }
+
+    // Why isn't this working?!?
+    // return super.shouldComponentUpdate(nextProps, nextState);
+    return true;
+  }
+
+  componentDidUpdate (prevProps) {
+    if (![this.props.location.pathname, '/'].includes(prevProps.location.pathname)) {
+      this.columnsAreaNode.handleChildrenContentChange();
+    }
+  }
+
+  componentWillUnmount () {
+    window.removeEventListener('beforeunload', this.handleBeforeUnload);
+    window.removeEventListener('resize', this.handleResize);
+    document.removeEventListener('dragenter', this.handleDragEnter);
+    document.removeEventListener('dragover', this.handleDragOver);
+    document.removeEventListener('drop', this.handleDrop);
+    document.removeEventListener('dragleave', this.handleDragLeave);
+    document.removeEventListener('dragend', this.handleDragEnd);
+  }
+
+  setRef = c => {
+    this.node = c;
+  }
+
+  setColumnsAreaRef = c => {
+    this.columnsAreaNode = c.getWrappedInstance().getWrappedInstance();
+  }
+
+  handleHotkeyNew = e => {
+    e.preventDefault();
+
+    const element = this.node.querySelector('.compose-form__autosuggest-wrapper textarea');
+
+    if (element) {
+      element.focus();
+    }
+  }
+
+  handleHotkeySearch = e => {
+    e.preventDefault();
+
+    const element = this.node.querySelector('.search__input');
+
+    if (element) {
+      element.focus();
+    }
+  }
+
+  handleHotkeyForceNew = e => {
+    this.handleHotkeyNew(e);
+    this.props.dispatch(resetCompose());
+  }
+
+  handleHotkeyFocusColumn = e => {
+    const index  = (e.key * 1) + 1; // First child is drawer, skip that
+    const column = this.node.querySelector(`.column:nth-child(${index})`);
+
+    if (column) {
+      const status = column.querySelector('.focusable');
+
+      if (status) {
+        status.focus();
+      }
+    }
+  }
+
+  handleHotkeyBack = () => {
+    if (window.history && window.history.length === 1) {
+      this.context.router.history.push('/');
+    } else {
+      this.context.router.history.goBack();
+    }
+  }
+
+  setHotkeysRef = c => {
+    this.hotkeys = c;
+  }
+
+  handleHotkeyGoToHome = () => {
+    this.context.router.history.push('/timelines/home');
+  }
+
+  handleHotkeyGoToNotifications = () => {
+    this.context.router.history.push('/notifications');
+  }
+
+  handleHotkeyGoToLocal = () => {
+    this.context.router.history.push('/timelines/public/local');
+  }
+
+  handleHotkeyGoToFederated = () => {
+    this.context.router.history.push('/timelines/public');
+  }
+
+  handleHotkeyGoToStart = () => {
+    this.context.router.history.push('/getting-started');
+  }
+
+  handleHotkeyGoToFavourites = () => {
+    this.context.router.history.push('/favourites');
+  }
+
+  handleHotkeyGoToPinned = () => {
+    this.context.router.history.push('/pinned');
+  }
+
+  handleHotkeyGoToProfile = () => {
+    this.context.router.history.push(`/accounts/${me}`);
+  }
+
+  handleHotkeyGoToBlocked = () => {
+    this.context.router.history.push('/blocks');
+  }
+
+  handleHotkeyGoToMuted = () => {
+    this.context.router.history.push('/mutes');
+  }
+
+  render () {
+    const { width, draggingOver } = this.state;
+    const { children } = this.props;
+
+    const handlers = {
+      new: this.handleHotkeyNew,
+      search: this.handleHotkeySearch,
+      forceNew: this.handleHotkeyForceNew,
+      focusColumn: this.handleHotkeyFocusColumn,
+      back: this.handleHotkeyBack,
+      goToHome: this.handleHotkeyGoToHome,
+      goToNotifications: this.handleHotkeyGoToNotifications,
+      goToLocal: this.handleHotkeyGoToLocal,
+      goToFederated: this.handleHotkeyGoToFederated,
+      goToStart: this.handleHotkeyGoToStart,
+      goToFavourites: this.handleHotkeyGoToFavourites,
+      goToPinned: this.handleHotkeyGoToPinned,
+      goToProfile: this.handleHotkeyGoToProfile,
+      goToBlocked: this.handleHotkeyGoToBlocked,
+      goToMuted: this.handleHotkeyGoToMuted,
+    };
+
+    return (
+      <HotKeys keyMap={keyMap} handlers={handlers} ref={this.setHotkeysRef}>
+        <div className='ui' ref={this.setRef}>
+          <TabsBar />
+
+          <ColumnsAreaContainer ref={this.setColumnsAreaRef} singleColumn={isMobile(width)}>
+            <WrappedSwitch>
+              <Redirect from='/' to='/getting-started' exact />
+              <WrappedRoute path='/getting-started' component={GettingStarted} content={children} />
+              <WrappedRoute path='/timelines/home' component={HomeTimeline} content={children} />
+              <WrappedRoute path='/timelines/public' exact component={PublicTimeline} content={children} />
+              <WrappedRoute path='/timelines/public/local' component={CommunityTimeline} content={children} />
+              <WrappedRoute path='/timelines/tag/:id' component={HashtagTimeline} content={children} />
+
+              <WrappedRoute path='/notifications' component={Notifications} content={children} />
+              <WrappedRoute path='/favourites' component={FavouritedStatuses} content={children} />
+              <WrappedRoute path='/pinned' component={PinnedStatuses} content={children} />
+
+              <WrappedRoute path='/statuses/new' component={Compose} content={children} />
+              <WrappedRoute path='/statuses/:statusId' exact component={Status} content={children} />
+              <WrappedRoute path='/statuses/:statusId/reblogs' component={Reblogs} content={children} />
+              <WrappedRoute path='/statuses/:statusId/favourites' component={Favourites} content={children} />
+
+              <WrappedRoute path='/accounts/:accountId' exact component={AccountTimeline} content={children} />
+              <WrappedRoute path='/accounts/:accountId/followers' component={Followers} content={children} />
+              <WrappedRoute path='/accounts/:accountId/following' component={Following} content={children} />
+              <WrappedRoute path='/accounts/:accountId/media' component={AccountGallery} content={children} />
+
+              <WrappedRoute path='/follow_requests' component={FollowRequests} content={children} />
+              <WrappedRoute path='/blocks' component={Blocks} content={children} />
+              <WrappedRoute path='/mutes' component={Mutes} content={children} />
+
+              <WrappedRoute component={GenericNotFound} content={children} />
+            </WrappedSwitch>
+          </ColumnsAreaContainer>
+
+          <NotificationsContainer />
+          <LoadingBarContainer className='loading-bar' />
+          <ModalContainer />
+          <UploadArea active={draggingOver} onClose={this.closeUploadModal} />
+        </div>
+      </HotKeys>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/util/async-components.js b/app/javascript/mastodon/features/ui/util/async-components.js
new file mode 100644
index 00000000000..39663d5cab3
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/util/async-components.js
@@ -0,0 +1,107 @@
+export function EmojiPicker () {
+  return import(/* webpackChunkName: "emoji_picker" */'../../emoji/emoji_picker');
+}
+
+export function Compose () {
+  return import(/* webpackChunkName: "features/compose" */'../../compose');
+}
+
+export function Notifications () {
+  return import(/* webpackChunkName: "features/notifications" */'../../notifications');
+}
+
+export function HomeTimeline () {
+  return import(/* webpackChunkName: "features/home_timeline" */'../../home_timeline');
+}
+
+export function PublicTimeline () {
+  return import(/* webpackChunkName: "features/public_timeline" */'../../public_timeline');
+}
+
+export function CommunityTimeline () {
+  return import(/* webpackChunkName: "features/community_timeline" */'../../community_timeline');
+}
+
+export function HashtagTimeline () {
+  return import(/* webpackChunkName: "features/hashtag_timeline" */'../../hashtag_timeline');
+}
+
+export function Status () {
+  return import(/* webpackChunkName: "features/status" */'../../status');
+}
+
+export function GettingStarted () {
+  return import(/* webpackChunkName: "features/getting_started" */'../../getting_started');
+}
+
+export function PinnedStatuses () {
+  return import(/* webpackChunkName: "features/pinned_statuses" */'../../pinned_statuses');
+}
+
+export function AccountTimeline () {
+  return import(/* webpackChunkName: "features/account_timeline" */'../../account_timeline');
+}
+
+export function AccountGallery () {
+  return import(/* webpackChunkName: "features/account_gallery" */'../../account_gallery');
+}
+
+export function Followers () {
+  return import(/* webpackChunkName: "features/followers" */'../../followers');
+}
+
+export function Following () {
+  return import(/* webpackChunkName: "features/following" */'../../following');
+}
+
+export function Reblogs () {
+  return import(/* webpackChunkName: "features/reblogs" */'../../reblogs');
+}
+
+export function Favourites () {
+  return import(/* webpackChunkName: "features/favourites" */'../../favourites');
+}
+
+export function FollowRequests () {
+  return import(/* webpackChunkName: "features/follow_requests" */'../../follow_requests');
+}
+
+export function GenericNotFound () {
+  return import(/* webpackChunkName: "features/generic_not_found" */'../../generic_not_found');
+}
+
+export function FavouritedStatuses () {
+  return import(/* webpackChunkName: "features/favourited_statuses" */'../../favourited_statuses');
+}
+
+export function Blocks () {
+  return import(/* webpackChunkName: "features/blocks" */'../../blocks');
+}
+
+export function Mutes () {
+  return import(/* webpackChunkName: "features/mutes" */'../../mutes');
+}
+
+export function OnboardingModal () {
+  return import(/* webpackChunkName: "modals/onboarding_modal" */'../components/onboarding_modal');
+}
+
+export function MuteModal () {
+  return import(/* webpackChunkName: "modals/mute_modal" */'../components/mute_modal');
+}
+
+export function ReportModal () {
+  return import(/* webpackChunkName: "modals/report_modal" */'../components/report_modal');
+}
+
+export function MediaGallery () {
+  return import(/* webpackChunkName: "status/media_gallery" */'../../../components/media_gallery');
+}
+
+export function Video () {
+  return import(/* webpackChunkName: "features/video" */'../../video');
+}
+
+export function EmbedModal () {
+  return import(/* webpackChunkName: "modals/embed_modal" */'../components/embed_modal');
+}
diff --git a/app/javascript/mastodon/features/ui/util/fullscreen.js b/app/javascript/mastodon/features/ui/util/fullscreen.js
new file mode 100644
index 00000000000..cf5d0cf98d0
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/util/fullscreen.js
@@ -0,0 +1,46 @@
+// APIs for normalizing fullscreen operations. Note that Edge uses
+// the WebKit-prefixed APIs currently (as of Edge 16).
+
+export const isFullscreen = () => document.fullscreenElement ||
+  document.webkitFullscreenElement ||
+  document.mozFullScreenElement;
+
+export const exitFullscreen = () => {
+  if (document.exitFullscreen) {
+    document.exitFullscreen();
+  } else if (document.webkitExitFullscreen) {
+    document.webkitExitFullscreen();
+  } else if (document.mozCancelFullScreen) {
+    document.mozCancelFullScreen();
+  }
+};
+
+export const requestFullscreen = el => {
+  if (el.requestFullscreen) {
+    el.requestFullscreen();
+  } else if (el.webkitRequestFullscreen) {
+    el.webkitRequestFullscreen();
+  } else if (el.mozRequestFullScreen) {
+    el.mozRequestFullScreen();
+  }
+};
+
+export const attachFullscreenListener = (listener) => {
+  if ('onfullscreenchange' in document) {
+    document.addEventListener('fullscreenchange', listener);
+  } else if ('onwebkitfullscreenchange' in document) {
+    document.addEventListener('webkitfullscreenchange', listener);
+  } else if ('onmozfullscreenchange' in document) {
+    document.addEventListener('mozfullscreenchange', listener);
+  }
+};
+
+export const detachFullscreenListener = (listener) => {
+  if ('onfullscreenchange' in document) {
+    document.removeEventListener('fullscreenchange', listener);
+  } else if ('onwebkitfullscreenchange' in document) {
+    document.removeEventListener('webkitfullscreenchange', listener);
+  } else if ('onmozfullscreenchange' in document) {
+    document.removeEventListener('mozfullscreenchange', listener);
+  }
+};
diff --git a/app/javascript/mastodon/features/ui/util/get_rect_from_entry.js b/app/javascript/mastodon/features/ui/util/get_rect_from_entry.js
new file mode 100644
index 00000000000..c266cd7dce7
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/util/get_rect_from_entry.js
@@ -0,0 +1,21 @@
+
+// Get the bounding client rect from an IntersectionObserver entry.
+// This is to work around a bug in Chrome: https://crbug.com/737228
+
+let hasBoundingRectBug;
+
+function getRectFromEntry(entry) {
+  if (typeof hasBoundingRectBug !== 'boolean') {
+    const boundingRect = entry.target.getBoundingClientRect();
+    const observerRect = entry.boundingClientRect;
+    hasBoundingRectBug = boundingRect.height !== observerRect.height ||
+      boundingRect.top !== observerRect.top ||
+      boundingRect.width !== observerRect.width ||
+      boundingRect.bottom !== observerRect.bottom ||
+      boundingRect.left !== observerRect.left ||
+      boundingRect.right !== observerRect.right;
+  }
+  return hasBoundingRectBug ? entry.target.getBoundingClientRect() : entry.boundingClientRect;
+}
+
+export default getRectFromEntry;
diff --git a/app/javascript/mastodon/features/ui/util/intersection_observer_wrapper.js b/app/javascript/mastodon/features/ui/util/intersection_observer_wrapper.js
new file mode 100644
index 00000000000..2b24c65831d
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/util/intersection_observer_wrapper.js
@@ -0,0 +1,57 @@
+// Wrapper for IntersectionObserver in order to make working with it
+// a bit easier. We also follow this performance advice:
+// "If you need to observe multiple elements, it is both possible and
+// advised to observe multiple elements using the same IntersectionObserver
+// instance by calling observe() multiple times."
+// https://developers.google.com/web/updates/2016/04/intersectionobserver
+
+class IntersectionObserverWrapper {
+
+  callbacks = {};
+  observerBacklog = [];
+  observer = null;
+
+  connect (options) {
+    const onIntersection = (entries) => {
+      entries.forEach(entry => {
+        const id = entry.target.getAttribute('data-id');
+        if (this.callbacks[id]) {
+          this.callbacks[id](entry);
+        }
+      });
+    };
+
+    this.observer = new IntersectionObserver(onIntersection, options);
+    this.observerBacklog.forEach(([ id, node, callback ]) => {
+      this.observe(id, node, callback);
+    });
+    this.observerBacklog = null;
+  }
+
+  observe (id, node, callback) {
+    if (!this.observer) {
+      this.observerBacklog.push([ id, node, callback ]);
+    } else {
+      this.callbacks[id] = callback;
+      this.observer.observe(node);
+    }
+  }
+
+  unobserve (id, node) {
+    if (this.observer) {
+      delete this.callbacks[id];
+      this.observer.unobserve(node);
+    }
+  }
+
+  disconnect () {
+    if (this.observer) {
+      this.callbacks = {};
+      this.observer.disconnect();
+      this.observer = null;
+    }
+  }
+
+}
+
+export default IntersectionObserverWrapper;
diff --git a/app/javascript/mastodon/features/ui/util/optional_motion.js b/app/javascript/mastodon/features/ui/util/optional_motion.js
new file mode 100644
index 00000000000..df3a8b54af2
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/util/optional_motion.js
@@ -0,0 +1,5 @@
+import { reduceMotion } from '../../../initial_state';
+import ReducedMotion from './reduced_motion';
+import Motion from 'react-motion/lib/Motion';
+
+export default reduceMotion ? ReducedMotion : Motion;
diff --git a/app/javascript/mastodon/features/ui/util/react_router_helpers.js b/app/javascript/mastodon/features/ui/util/react_router_helpers.js
new file mode 100644
index 00000000000..43007ddc3de
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/util/react_router_helpers.js
@@ -0,0 +1,64 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { Switch, Route } from 'react-router-dom';
+
+import ColumnLoading from '../components/column_loading';
+import BundleColumnError from '../components/bundle_column_error';
+import BundleContainer from '../containers/bundle_container';
+
+// Small wrapper to pass multiColumn to the route components
+export class WrappedSwitch extends React.PureComponent {
+
+  render () {
+    const { multiColumn, children } = this.props;
+
+    return (
+      <Switch>
+        {React.Children.map(children, child => React.cloneElement(child, { multiColumn }))}
+      </Switch>
+    );
+  }
+
+}
+
+WrappedSwitch.propTypes = {
+  multiColumn: PropTypes.bool,
+  children: PropTypes.node,
+};
+
+// Small Wraper to extract the params from the route and pass
+// them to the rendered component, together with the content to
+// be rendered inside (the children)
+export class WrappedRoute extends React.Component {
+
+  static propTypes = {
+    component: PropTypes.func.isRequired,
+    content: PropTypes.node,
+    multiColumn: PropTypes.bool,
+  }
+
+  renderComponent = ({ match }) => {
+    const { component, content, multiColumn } = this.props;
+
+    return (
+      <BundleContainer fetchComponent={component} loading={this.renderLoading} error={this.renderError}>
+        {Component => <Component params={match.params} multiColumn={multiColumn}>{content}</Component>}
+      </BundleContainer>
+    );
+  }
+
+  renderLoading = () => {
+    return <ColumnLoading />;
+  }
+
+  renderError = (props) => {
+    return <BundleColumnError {...props} />;
+  }
+
+  render () {
+    const { component: Component, content, ...rest } = this.props;
+
+    return <Route {...rest} render={this.renderComponent} />;
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/util/reduced_motion.js b/app/javascript/mastodon/features/ui/util/reduced_motion.js
new file mode 100644
index 00000000000..95519042b43
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/util/reduced_motion.js
@@ -0,0 +1,44 @@
+// Like react-motion's Motion, but reduces all animations to cross-fades
+// for the benefit of users with motion sickness.
+import React from 'react';
+import Motion from 'react-motion/lib/Motion';
+import PropTypes from 'prop-types';
+
+const stylesToKeep = ['opacity', 'backgroundOpacity'];
+
+const extractValue = (value) => {
+  // This is either an object with a "val" property or it's a number
+  return (typeof value === 'object' && value && 'val' in value) ? value.val : value;
+};
+
+class ReducedMotion extends React.Component {
+
+  static propTypes = {
+    defaultStyle: PropTypes.object,
+    style: PropTypes.object,
+    children: PropTypes.func,
+  }
+
+  render() {
+
+    const { style, defaultStyle, children } = this.props;
+
+    Object.keys(style).forEach(key => {
+      if (stylesToKeep.includes(key)) {
+        return;
+      }
+      // If it's setting an x or height or scale or some other value, we need
+      // to preserve the end-state value without actually animating it
+      style[key] = defaultStyle[key] = extractValue(style[key]);
+    });
+
+    return (
+      <Motion style={style} defaultStyle={defaultStyle}>
+        {children}
+      </Motion>
+    );
+  }
+
+}
+
+export default ReducedMotion;
diff --git a/app/javascript/mastodon/features/ui/util/schedule_idle_task.js b/app/javascript/mastodon/features/ui/util/schedule_idle_task.js
new file mode 100644
index 00000000000..b04d4a8eefa
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/util/schedule_idle_task.js
@@ -0,0 +1,29 @@
+// Wrapper to call requestIdleCallback() to schedule low-priority work.
+// See https://developer.mozilla.org/en-US/docs/Web/API/Background_Tasks_API
+// for a good breakdown of the concepts behind this.
+
+import Queue from 'tiny-queue';
+
+const taskQueue = new Queue();
+let runningRequestIdleCallback = false;
+
+function runTasks(deadline) {
+  while (taskQueue.length && deadline.timeRemaining() > 0) {
+    taskQueue.shift()();
+  }
+  if (taskQueue.length) {
+    requestIdleCallback(runTasks);
+  } else {
+    runningRequestIdleCallback = false;
+  }
+}
+
+function scheduleIdleTask(task) {
+  taskQueue.push(task);
+  if (!runningRequestIdleCallback) {
+    runningRequestIdleCallback = true;
+    requestIdleCallback(runTasks);
+  }
+}
+
+export default scheduleIdleTask;
diff --git a/app/javascript/mastodon/features/video/index.js b/app/javascript/mastodon/features/video/index.js
new file mode 100644
index 00000000000..003bf23a84f
--- /dev/null
+++ b/app/javascript/mastodon/features/video/index.js
@@ -0,0 +1,286 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import { throttle } from 'lodash';
+import classNames from 'classnames';
+import { isFullscreen, requestFullscreen, exitFullscreen } from '../ui/util/fullscreen';
+
+const messages = defineMessages({
+  play: { id: 'video.play', defaultMessage: 'Play' },
+  pause: { id: 'video.pause', defaultMessage: 'Pause' },
+  mute: { id: 'video.mute', defaultMessage: 'Mute sound' },
+  unmute: { id: 'video.unmute', defaultMessage: 'Unmute sound' },
+  hide: { id: 'video.hide', defaultMessage: 'Hide video' },
+  expand: { id: 'video.expand', defaultMessage: 'Expand video' },
+  close: { id: 'video.close', defaultMessage: 'Close video' },
+  fullscreen: { id: 'video.fullscreen', defaultMessage: 'Full screen' },
+  exit_fullscreen: { id: 'video.exit_fullscreen', defaultMessage: 'Exit full screen' },
+});
+
+const findElementPosition = el => {
+  let box;
+
+  if (el.getBoundingClientRect && el.parentNode) {
+    box = el.getBoundingClientRect();
+  }
+
+  if (!box) {
+    return {
+      left: 0,
+      top: 0,
+    };
+  }
+
+  const docEl = document.documentElement;
+  const body  = document.body;
+
+  const clientLeft = docEl.clientLeft || body.clientLeft || 0;
+  const scrollLeft = window.pageXOffset || body.scrollLeft;
+  const left       = (box.left + scrollLeft) - clientLeft;
+
+  const clientTop = docEl.clientTop || body.clientTop || 0;
+  const scrollTop = window.pageYOffset || body.scrollTop;
+  const top       = (box.top + scrollTop) - clientTop;
+
+  return {
+    left: Math.round(left),
+    top: Math.round(top),
+  };
+};
+
+const getPointerPosition = (el, event) => {
+  const position = {};
+  const box = findElementPosition(el);
+  const boxW = el.offsetWidth;
+  const boxH = el.offsetHeight;
+  const boxY = box.top;
+  const boxX = box.left;
+
+  let pageY = event.pageY;
+  let pageX = event.pageX;
+
+  if (event.changedTouches) {
+    pageX = event.changedTouches[0].pageX;
+    pageY = event.changedTouches[0].pageY;
+  }
+
+  position.y = Math.max(0, Math.min(1, ((boxY - pageY) + boxH) / boxH));
+  position.x = Math.max(0, Math.min(1, (pageX - boxX) / boxW));
+
+  return position;
+};
+
+@injectIntl
+export default class Video extends React.PureComponent {
+
+  static propTypes = {
+    preview: PropTypes.string,
+    src: PropTypes.string.isRequired,
+    alt: PropTypes.string,
+    width: PropTypes.number,
+    height: PropTypes.number,
+    sensitive: PropTypes.bool,
+    startTime: PropTypes.number,
+    onOpenVideo: PropTypes.func,
+    onCloseVideo: PropTypes.func,
+    intl: PropTypes.object.isRequired,
+  };
+
+  state = {
+    progress: 0,
+    paused: true,
+    dragging: false,
+    fullscreen: false,
+    hovered: false,
+    muted: false,
+    revealed: !this.props.sensitive,
+  };
+
+  setPlayerRef = c => {
+    this.player = c;
+  }
+
+  setVideoRef = c => {
+    this.video = c;
+  }
+
+  setSeekRef = c => {
+    this.seek = c;
+  }
+
+  handlePlay = () => {
+    this.setState({ paused: false });
+  }
+
+  handlePause = () => {
+    this.setState({ paused: true });
+  }
+
+  handleTimeUpdate = () => {
+    this.setState({ progress: 100 * (this.video.currentTime / this.video.duration) });
+  }
+
+  handleMouseDown = e => {
+    document.addEventListener('mousemove', this.handleMouseMove, true);
+    document.addEventListener('mouseup', this.handleMouseUp, true);
+    document.addEventListener('touchmove', this.handleMouseMove, true);
+    document.addEventListener('touchend', this.handleMouseUp, true);
+
+    this.setState({ dragging: true });
+    this.video.pause();
+    this.handleMouseMove(e);
+  }
+
+  handleMouseUp = () => {
+    document.removeEventListener('mousemove', this.handleMouseMove, true);
+    document.removeEventListener('mouseup', this.handleMouseUp, true);
+    document.removeEventListener('touchmove', this.handleMouseMove, true);
+    document.removeEventListener('touchend', this.handleMouseUp, true);
+
+    this.setState({ dragging: false });
+    this.video.play();
+  }
+
+  handleMouseMove = throttle(e => {
+    const { x } = getPointerPosition(this.seek, e);
+    this.video.currentTime = this.video.duration * x;
+    this.setState({ progress: x * 100 });
+  }, 60);
+
+  togglePlay = () => {
+    if (this.state.paused) {
+      this.video.play();
+    } else {
+      this.video.pause();
+    }
+  }
+
+  toggleFullscreen = () => {
+    if (isFullscreen()) {
+      exitFullscreen();
+    } else {
+      requestFullscreen(this.player);
+    }
+  }
+
+  componentDidMount () {
+    document.addEventListener('fullscreenchange', this.handleFullscreenChange, true);
+    document.addEventListener('webkitfullscreenchange', this.handleFullscreenChange, true);
+    document.addEventListener('mozfullscreenchange', this.handleFullscreenChange, true);
+    document.addEventListener('MSFullscreenChange', this.handleFullscreenChange, true);
+  }
+
+  componentWillUnmount () {
+    document.removeEventListener('fullscreenchange', this.handleFullscreenChange, true);
+    document.removeEventListener('webkitfullscreenchange', this.handleFullscreenChange, true);
+    document.removeEventListener('mozfullscreenchange', this.handleFullscreenChange, true);
+    document.removeEventListener('MSFullscreenChange', this.handleFullscreenChange, true);
+  }
+
+  handleFullscreenChange = () => {
+    this.setState({ fullscreen: isFullscreen() });
+  }
+
+  handleMouseEnter = () => {
+    this.setState({ hovered: true });
+  }
+
+  handleMouseLeave = () => {
+    this.setState({ hovered: false });
+  }
+
+  toggleMute = () => {
+    this.video.muted = !this.video.muted;
+    this.setState({ muted: this.video.muted });
+  }
+
+  toggleReveal = () => {
+    if (this.state.revealed) {
+      this.video.pause();
+    }
+
+    this.setState({ revealed: !this.state.revealed });
+  }
+
+  handleLoadedData = () => {
+    if (this.props.startTime) {
+      this.video.currentTime = this.props.startTime;
+      this.video.play();
+    }
+  }
+
+  handleProgress = () => {
+    if (this.video.buffered.length > 0) {
+      this.setState({ buffer: this.video.buffered.end(0) / this.video.duration * 100 });
+    }
+  }
+
+  handleOpenVideo = () => {
+    this.video.pause();
+    this.props.onOpenVideo(this.video.currentTime);
+  }
+
+  handleCloseVideo = () => {
+    this.video.pause();
+    this.props.onCloseVideo();
+  }
+
+  render () {
+    const { preview, src, width, height, startTime, onOpenVideo, onCloseVideo, intl, alt } = this.props;
+    const { progress, buffer, dragging, paused, fullscreen, hovered, muted, revealed } = this.state;
+
+    return (
+      <div className={classNames('video-player', { inactive: !revealed, inline: width && height && !fullscreen, fullscreen })} style={{ width, height }} ref={this.setPlayerRef} onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave}>
+        <video
+          ref={this.setVideoRef}
+          src={src}
+          poster={preview}
+          preload={startTime ? 'auto' : 'none'}
+          loop
+          role='button'
+          tabIndex='0'
+          aria-label={alt}
+          width={width}
+          height={height}
+          onClick={this.togglePlay}
+          onPlay={this.handlePlay}
+          onPause={this.handlePause}
+          onTimeUpdate={this.handleTimeUpdate}
+          onLoadedData={this.handleLoadedData}
+          onProgress={this.handleProgress}
+        />
+
+        <button className={classNames('video-player__spoiler', { active: !revealed })} onClick={this.toggleReveal}>
+          <span className='video-player__spoiler__title'><FormattedMessage id='status.sensitive_warning' defaultMessage='Sensitive content' /></span>
+          <span className='video-player__spoiler__subtitle'><FormattedMessage id='status.sensitive_toggle' defaultMessage='Click to view' /></span>
+        </button>
+
+        <div className={classNames('video-player__controls', { active: paused || hovered })}>
+          <div className='video-player__seek' onMouseDown={this.handleMouseDown} ref={this.setSeekRef}>
+            <div className='video-player__seek__buffer' style={{ width: `${buffer}%` }} />
+            <div className='video-player__seek__progress' style={{ width: `${progress}%` }} />
+
+            <span
+              className={classNames('video-player__seek__handle', { active: dragging })}
+              tabIndex='0'
+              style={{ left: `${progress}%` }}
+            />
+          </div>
+
+          <div className='video-player__buttons left'>
+            <button aria-label={intl.formatMessage(paused ? messages.play : messages.pause)} onClick={this.togglePlay}><i className={classNames('fa fa-fw', { 'fa-play': paused, 'fa-pause': !paused })} /></button>
+            <button aria-label={intl.formatMessage(muted ? messages.unmute : messages.mute)} onClick={this.toggleMute}><i className={classNames('fa fa-fw', { 'fa-volume-off': muted, 'fa-volume-up': !muted })} /></button>
+            {!onCloseVideo && <button aria-label={intl.formatMessage(messages.hide)} onClick={this.toggleReveal}><i className='fa fa-fw fa-eye' /></button>}
+          </div>
+
+          <div className='video-player__buttons right'>
+            {(!fullscreen && onOpenVideo) && <button aria-label={intl.formatMessage(messages.expand)} onClick={this.handleOpenVideo}><i className='fa fa-fw fa-expand' /></button>}
+            {onCloseVideo && <button aria-label={intl.formatMessage(messages.close)} onClick={this.handleCloseVideo}><i className='fa fa-fw fa-times' /></button>}
+            <button aria-label={intl.formatMessage(fullscreen ? messages.exit_fullscreen : messages.fullscreen)} onClick={this.toggleFullscreen}><i className={classNames('fa fa-fw', { 'fa-arrows-alt': !fullscreen, 'fa-compress': fullscreen })} /></button>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/initial_state.js b/app/javascript/mastodon/initial_state.js
new file mode 100644
index 00000000000..3fc45077d4c
--- /dev/null
+++ b/app/javascript/mastodon/initial_state.js
@@ -0,0 +1,13 @@
+const element = document.getElementById('initial-state');
+const initialState = element && JSON.parse(element.textContent);
+
+const getMeta = (prop) => initialState && initialState.meta && initialState.meta[prop];
+
+export const reduceMotion = getMeta('reduce_motion');
+export const autoPlayGif = getMeta('auto_play_gif');
+export const unfollowModal = getMeta('unfollow_modal');
+export const boostModal = getMeta('boost_modal');
+export const deleteModal = getMeta('delete_modal');
+export const me = getMeta('me');
+
+export default initialState;
diff --git a/app/javascript/mastodon/is_mobile.js b/app/javascript/mastodon/is_mobile.js
new file mode 100644
index 00000000000..f96df1ebbc6
--- /dev/null
+++ b/app/javascript/mastodon/is_mobile.js
@@ -0,0 +1,27 @@
+import detectPassiveEvents from 'detect-passive-events';
+
+const LAYOUT_BREAKPOINT = 630;
+
+export function isMobile(width) {
+  return width <= LAYOUT_BREAKPOINT;
+};
+
+const iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
+
+let userTouching = false;
+let listenerOptions = detectPassiveEvents.hasSupport ? { passive: true } : false;
+
+function touchListener() {
+  userTouching = true;
+  window.removeEventListener('touchstart', touchListener, listenerOptions);
+}
+
+window.addEventListener('touchstart', touchListener, listenerOptions);
+
+export function isUserTouching() {
+  return userTouching;
+}
+
+export function isIOS() {
+  return iOS;
+};
diff --git a/app/javascript/mastodon/link_header.js b/app/javascript/mastodon/link_header.js
new file mode 100644
index 00000000000..a3e7ccf1c1b
--- /dev/null
+++ b/app/javascript/mastodon/link_header.js
@@ -0,0 +1,33 @@
+import Link from 'http-link-header';
+import querystring from 'querystring';
+
+Link.parseAttrs = (link, parts) => {
+  let match = null;
+  let attr  = '';
+  let value = '';
+  let attrs = '';
+
+  let uriAttrs = /<(.*)>;\s*(.*)/gi.exec(parts);
+
+  if(uriAttrs) {
+    attrs = uriAttrs[2];
+    link  = Link.parseParams(link, uriAttrs[1]);
+  }
+
+  while(match = Link.attrPattern.exec(attrs)) { // eslint-disable-line no-cond-assign
+    attr  = match[1].toLowerCase();
+    value = match[4] || match[3] || match[2];
+
+    if( /\*$/.test(attr)) {
+      Link.setAttr(link, attr, Link.parseExtendedValue(value));
+    } else if(/%/.test(value)) {
+      Link.setAttr(link, attr, querystring.decode(value));
+    } else {
+      Link.setAttr(link, attr, value);
+    }
+  }
+
+  return link;
+};
+
+export default Link;
diff --git a/app/javascript/mastodon/load_polyfills.js b/app/javascript/mastodon/load_polyfills.js
new file mode 100644
index 00000000000..8927b735855
--- /dev/null
+++ b/app/javascript/mastodon/load_polyfills.js
@@ -0,0 +1,39 @@
+// Convenience function to load polyfills and return a promise when it's done.
+// If there are no polyfills, then this is just Promise.resolve() which means
+// it will execute in the same tick of the event loop (i.e. near-instant).
+
+function importBasePolyfills() {
+  return import(/* webpackChunkName: "base_polyfills" */ './base_polyfills');
+}
+
+function importExtraPolyfills() {
+  return import(/* webpackChunkName: "extra_polyfills" */ './extra_polyfills');
+}
+
+function loadPolyfills() {
+  const needsBasePolyfills = !(
+    window.Intl &&
+    Object.assign &&
+    Number.isNaN &&
+    window.Symbol &&
+    Array.prototype.includes
+  );
+
+  // Latest version of Firefox and Safari do not have IntersectionObserver.
+  // Edge does not have requestIdleCallback and object-fit CSS property.
+  // This avoids shipping them all the polyfills.
+  const needsExtraPolyfills = !(
+    window.IntersectionObserver &&
+    window.IntersectionObserverEntry &&
+    'isIntersecting' in IntersectionObserverEntry.prototype &&
+    window.requestIdleCallback &&
+    'object-fit' in (new Image()).style
+  );
+
+  return Promise.all([
+    needsBasePolyfills && importBasePolyfills(),
+    needsExtraPolyfills && importExtraPolyfills(),
+  ]);
+}
+
+export default loadPolyfills;
diff --git a/app/javascript/mastodon/locales/defaultMessages.json b/app/javascript/mastodon/locales/defaultMessages.json
index ebb514e69bd..f400b283fdb 100644
--- a/app/javascript/mastodon/locales/defaultMessages.json
+++ b/app/javascript/mastodon/locales/defaultMessages.json
@@ -755,19 +755,6 @@
     ],
     "path": "app/javascript/mastodon/features/compose/index.json"
   },
-  {
-    "descriptors": [
-      {
-        "defaultMessage": "Direct messages",
-        "id": "column.direct"
-      },
-      {
-        "defaultMessage": "You don't have any direct messages yet. When you send or receive one, it will show up here.",
-        "id": "empty_column.direct"
-      }
-    ],
-    "path": "app/javascript/mastodon/features/direct_timeline/index.json"
-  },
   {
     "descriptors": [
       {
@@ -829,10 +816,6 @@
         "defaultMessage": "Local timeline",
         "id": "navigation_bar.community_timeline"
       },
-      {
-        "defaultMessage": "Direct messages",
-        "id": "navigation_bar.direct"
-      },
       {
         "defaultMessage": "Preferences",
         "id": "navigation_bar.preferences"
diff --git a/app/javascript/mastodon/locales/en.json b/app/javascript/mastodon/locales/en.json
index efe0e1de997..1d0bbcee55c 100644
--- a/app/javascript/mastodon/locales/en.json
+++ b/app/javascript/mastodon/locales/en.json
@@ -28,7 +28,6 @@
   "bundle_modal_error.retry": "Try again",
   "column.blocks": "Blocked users",
   "column.community": "Local timeline",
-  "column.direct": "Direct messages",
   "column.favourites": "Favourites",
   "column.follow_requests": "Follow requests",
   "column.home": "Home",
@@ -81,7 +80,6 @@
   "emoji_button.symbols": "Symbols",
   "emoji_button.travel": "Travel & Places",
   "empty_column.community": "The local timeline is empty. Write something publicly to get the ball rolling!",
-  "empty_column.direct": "You don't have any direct messages yet. When you send or receive one, it will show up here.",
   "empty_column.hashtag": "There is nothing in this hashtag yet.",
   "empty_column.home": "Your home timeline is empty! Visit {public} or use search to get started and meet other users.",
   "empty_column.home.public_timeline": "the public timeline",
@@ -108,7 +106,6 @@
   "missing_indicator.label": "Not found",
   "navigation_bar.blocks": "Blocked users",
   "navigation_bar.community_timeline": "Local timeline",
-  "navigation_bar.direct": "Direct messages",
   "navigation_bar.edit_profile": "Edit profile",
   "navigation_bar.favourites": "Favourites",
   "navigation_bar.follow_requests": "Follow requests",
diff --git a/app/javascript/mastodon/main.js b/app/javascript/mastodon/main.js
new file mode 100644
index 00000000000..23b6b04faf4
--- /dev/null
+++ b/app/javascript/mastodon/main.js
@@ -0,0 +1,34 @@
+import * as WebPushSubscription from './web_push_subscription';
+import Mastodon from './containers/mastodon';
+import React from 'react';
+import ReactDOM from 'react-dom';
+import ready from './ready';
+
+const perf = require('./performance');
+
+function main() {
+  perf.start('main()');
+
+  if (window.history && history.replaceState) {
+    const { pathname, search, hash } = window.location;
+    const path = pathname + search + hash;
+    if (!(/^\/web[$/]/).test(path)) {
+      history.replaceState(null, document.title, `/web${path}`);
+    }
+  }
+
+  ready(() => {
+    const mountNode = document.getElementById('mastodon');
+    const props = JSON.parse(mountNode.getAttribute('data-props'));
+
+    ReactDOM.render(<Mastodon {...props} />, mountNode);
+    if (process.env.NODE_ENV === 'production') {
+      // avoid offline in dev mode because it's harder to debug
+      require('offline-plugin/runtime').install();
+      WebPushSubscription.register();
+    }
+    perf.stop('main()');
+  });
+}
+
+export default main;
diff --git a/app/javascript/mastodon/middleware/errors.js b/app/javascript/mastodon/middleware/errors.js
new file mode 100644
index 00000000000..b2c5f0898b4
--- /dev/null
+++ b/app/javascript/mastodon/middleware/errors.js
@@ -0,0 +1,31 @@
+import { showAlert } from '../actions/alerts';
+
+const defaultFailSuffix = 'FAIL';
+
+export default function errorsMiddleware() {
+  return ({ dispatch }) => next => action => {
+    if (action.type && !action.skipAlert) {
+      const isFail = new RegExp(`${defaultFailSuffix}$`, 'g');
+
+      if (action.type.match(isFail)) {
+        if (action.error.response) {
+          const { data, status, statusText } = action.error.response;
+
+          let message = statusText;
+          let title   = `${status}`;
+
+          if (data.error) {
+            message = data.error;
+          }
+
+          dispatch(showAlert(title, message));
+        } else {
+          console.error(action.error);
+          dispatch(showAlert('Oops!', 'An unexpected error occurred.'));
+        }
+      }
+    }
+
+    return next(action);
+  };
+};
diff --git a/app/javascript/mastodon/middleware/loading_bar.js b/app/javascript/mastodon/middleware/loading_bar.js
new file mode 100644
index 00000000000..a98f1bb2b65
--- /dev/null
+++ b/app/javascript/mastodon/middleware/loading_bar.js
@@ -0,0 +1,25 @@
+import { showLoading, hideLoading } from 'react-redux-loading-bar';
+
+const defaultTypeSuffixes = ['PENDING', 'FULFILLED', 'REJECTED'];
+
+export default function loadingBarMiddleware(config = {}) {
+  const promiseTypeSuffixes = config.promiseTypeSuffixes || defaultTypeSuffixes;
+
+  return ({ dispatch }) => next => (action) => {
+    if (action.type && !action.skipLoading) {
+      const [PENDING, FULFILLED, REJECTED] = promiseTypeSuffixes;
+
+      const isPending = new RegExp(`${PENDING}$`, 'g');
+      const isFulfilled = new RegExp(`${FULFILLED}$`, 'g');
+      const isRejected = new RegExp(`${REJECTED}$`, 'g');
+
+      if (action.type.match(isPending)) {
+        dispatch(showLoading());
+      } else if (action.type.match(isFulfilled) || action.type.match(isRejected)) {
+        dispatch(hideLoading());
+      }
+    }
+
+    return next(action);
+  };
+};
diff --git a/app/javascript/mastodon/middleware/sounds.js b/app/javascript/mastodon/middleware/sounds.js
new file mode 100644
index 00000000000..3d1e3eabaa0
--- /dev/null
+++ b/app/javascript/mastodon/middleware/sounds.js
@@ -0,0 +1,46 @@
+const createAudio = sources => {
+  const audio = new Audio();
+  sources.forEach(({ type, src }) => {
+    const source = document.createElement('source');
+    source.type = type;
+    source.src = src;
+    audio.appendChild(source);
+  });
+  return audio;
+};
+
+const play = audio => {
+  if (!audio.paused) {
+    audio.pause();
+    if (typeof audio.fastSeek === 'function') {
+      audio.fastSeek(0);
+    } else {
+      audio.seek(0);
+    }
+  }
+
+  audio.play();
+};
+
+export default function soundsMiddleware() {
+  const soundCache = {
+    boop: createAudio([
+      {
+        src: '/sounds/boop.ogg',
+        type: 'audio/ogg',
+      },
+      {
+        src: '/sounds/boop.mp3',
+        type: 'audio/mpeg',
+      },
+    ]),
+  };
+
+  return () => next => action => {
+    if (action.meta && action.meta.sound && soundCache[action.meta.sound]) {
+      play(soundCache[action.meta.sound]);
+    }
+
+    return next(action);
+  };
+};
diff --git a/app/javascript/mastodon/performance.js b/app/javascript/mastodon/performance.js
new file mode 100644
index 00000000000..450a90626ea
--- /dev/null
+++ b/app/javascript/mastodon/performance.js
@@ -0,0 +1,31 @@
+//
+// Tools for performance debugging, only enabled in development mode.
+// Open up Chrome Dev Tools, then Timeline, then User Timing to see output.
+// Also see config/webpack/loaders/mark.js for the webpack loader marks.
+//
+
+let marky;
+
+if (process.env.NODE_ENV === 'development') {
+  if (typeof performance !== 'undefined' && performance.setResourceTimingBufferSize) {
+    // Increase Firefox's performance entry limit; otherwise it's capped to 150.
+    // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1331135
+    performance.setResourceTimingBufferSize(Infinity);
+  }
+  marky = require('marky');
+  // allows us to easily do e.g. ReactPerf.printWasted() while debugging
+  //window.ReactPerf = require('react-addons-perf');
+  //window.ReactPerf.start();
+}
+
+export function start(name) {
+  if (process.env.NODE_ENV === 'development') {
+    marky.mark(name);
+  }
+}
+
+export function stop(name) {
+  if (process.env.NODE_ENV === 'development') {
+    marky.stop(name);
+  }
+}
diff --git a/app/javascript/mastodon/ready.js b/app/javascript/mastodon/ready.js
new file mode 100644
index 00000000000..dd543910bb0
--- /dev/null
+++ b/app/javascript/mastodon/ready.js
@@ -0,0 +1,7 @@
+export default function ready(loaded) {
+  if (['interactive', 'complete'].includes(document.readyState)) {
+    loaded();
+  } else {
+    document.addEventListener('DOMContentLoaded', loaded);
+  }
+}
diff --git a/app/javascript/mastodon/reducers/accounts.js b/app/javascript/mastodon/reducers/accounts.js
new file mode 100644
index 00000000000..8a4d69f26fa
--- /dev/null
+++ b/app/javascript/mastodon/reducers/accounts.js
@@ -0,0 +1,135 @@
+import {
+  ACCOUNT_FETCH_SUCCESS,
+  FOLLOWERS_FETCH_SUCCESS,
+  FOLLOWERS_EXPAND_SUCCESS,
+  FOLLOWING_FETCH_SUCCESS,
+  FOLLOWING_EXPAND_SUCCESS,
+  FOLLOW_REQUESTS_FETCH_SUCCESS,
+  FOLLOW_REQUESTS_EXPAND_SUCCESS,
+} from '../actions/accounts';
+import {
+  BLOCKS_FETCH_SUCCESS,
+  BLOCKS_EXPAND_SUCCESS,
+} from '../actions/blocks';
+import {
+  MUTES_FETCH_SUCCESS,
+  MUTES_EXPAND_SUCCESS,
+} from '../actions/mutes';
+import { COMPOSE_SUGGESTIONS_READY } from '../actions/compose';
+import {
+  REBLOG_SUCCESS,
+  UNREBLOG_SUCCESS,
+  FAVOURITE_SUCCESS,
+  UNFAVOURITE_SUCCESS,
+  REBLOGS_FETCH_SUCCESS,
+  FAVOURITES_FETCH_SUCCESS,
+} from '../actions/interactions';
+import {
+  TIMELINE_REFRESH_SUCCESS,
+  TIMELINE_UPDATE,
+  TIMELINE_EXPAND_SUCCESS,
+} from '../actions/timelines';
+import {
+  STATUS_FETCH_SUCCESS,
+  CONTEXT_FETCH_SUCCESS,
+} from '../actions/statuses';
+import { SEARCH_FETCH_SUCCESS } from '../actions/search';
+import {
+  NOTIFICATIONS_UPDATE,
+  NOTIFICATIONS_REFRESH_SUCCESS,
+  NOTIFICATIONS_EXPAND_SUCCESS,
+} from '../actions/notifications';
+import {
+  FAVOURITED_STATUSES_FETCH_SUCCESS,
+  FAVOURITED_STATUSES_EXPAND_SUCCESS,
+} from '../actions/favourites';
+import { STORE_HYDRATE } from '../actions/store';
+import emojify from '../features/emoji/emoji';
+import { Map as ImmutableMap, fromJS } from 'immutable';
+import escapeTextContentForBrowser from 'escape-html';
+
+const normalizeAccount = (state, account) => {
+  account = { ...account };
+
+  delete account.followers_count;
+  delete account.following_count;
+  delete account.statuses_count;
+
+  const displayName = account.display_name.length === 0 ? account.username : account.display_name;
+  account.display_name_html = emojify(escapeTextContentForBrowser(displayName));
+  account.note_emojified = emojify(account.note);
+
+  return state.set(account.id, fromJS(account));
+};
+
+const normalizeAccounts = (state, accounts) => {
+  accounts.forEach(account => {
+    state = normalizeAccount(state, account);
+  });
+
+  return state;
+};
+
+const normalizeAccountFromStatus = (state, status) => {
+  state = normalizeAccount(state, status.account);
+
+  if (status.reblog && status.reblog.account) {
+    state = normalizeAccount(state, status.reblog.account);
+  }
+
+  return state;
+};
+
+const normalizeAccountsFromStatuses = (state, statuses) => {
+  statuses.forEach(status => {
+    state = normalizeAccountFromStatus(state, status);
+  });
+
+  return state;
+};
+
+const initialState = ImmutableMap();
+
+export default function accounts(state = initialState, action) {
+  switch(action.type) {
+  case STORE_HYDRATE:
+    return state.merge(action.state.get('accounts'));
+  case ACCOUNT_FETCH_SUCCESS:
+  case NOTIFICATIONS_UPDATE:
+    return normalizeAccount(state, action.account);
+  case FOLLOWERS_FETCH_SUCCESS:
+  case FOLLOWERS_EXPAND_SUCCESS:
+  case FOLLOWING_FETCH_SUCCESS:
+  case FOLLOWING_EXPAND_SUCCESS:
+  case REBLOGS_FETCH_SUCCESS:
+  case FAVOURITES_FETCH_SUCCESS:
+  case COMPOSE_SUGGESTIONS_READY:
+  case FOLLOW_REQUESTS_FETCH_SUCCESS:
+  case FOLLOW_REQUESTS_EXPAND_SUCCESS:
+  case BLOCKS_FETCH_SUCCESS:
+  case BLOCKS_EXPAND_SUCCESS:
+  case MUTES_FETCH_SUCCESS:
+  case MUTES_EXPAND_SUCCESS:
+    return action.accounts ? normalizeAccounts(state, action.accounts) : state;
+  case NOTIFICATIONS_REFRESH_SUCCESS:
+  case NOTIFICATIONS_EXPAND_SUCCESS:
+  case SEARCH_FETCH_SUCCESS:
+    return normalizeAccountsFromStatuses(normalizeAccounts(state, action.accounts), action.statuses);
+  case TIMELINE_REFRESH_SUCCESS:
+  case TIMELINE_EXPAND_SUCCESS:
+  case CONTEXT_FETCH_SUCCESS:
+  case FAVOURITED_STATUSES_FETCH_SUCCESS:
+  case FAVOURITED_STATUSES_EXPAND_SUCCESS:
+    return normalizeAccountsFromStatuses(state, action.statuses);
+  case REBLOG_SUCCESS:
+  case FAVOURITE_SUCCESS:
+  case UNREBLOG_SUCCESS:
+  case UNFAVOURITE_SUCCESS:
+    return normalizeAccountFromStatus(state, action.response);
+  case TIMELINE_UPDATE:
+  case STATUS_FETCH_SUCCESS:
+    return normalizeAccountFromStatus(state, action.status);
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/accounts_counters.js b/app/javascript/mastodon/reducers/accounts_counters.js
new file mode 100644
index 00000000000..1ed0fe3e39f
--- /dev/null
+++ b/app/javascript/mastodon/reducers/accounts_counters.js
@@ -0,0 +1,135 @@
+import {
+  ACCOUNT_FETCH_SUCCESS,
+  FOLLOWERS_FETCH_SUCCESS,
+  FOLLOWERS_EXPAND_SUCCESS,
+  FOLLOWING_FETCH_SUCCESS,
+  FOLLOWING_EXPAND_SUCCESS,
+  FOLLOW_REQUESTS_FETCH_SUCCESS,
+  FOLLOW_REQUESTS_EXPAND_SUCCESS,
+  ACCOUNT_FOLLOW_SUCCESS,
+  ACCOUNT_UNFOLLOW_SUCCESS,
+} from '../actions/accounts';
+import {
+  BLOCKS_FETCH_SUCCESS,
+  BLOCKS_EXPAND_SUCCESS,
+} from '../actions/blocks';
+import {
+  MUTES_FETCH_SUCCESS,
+  MUTES_EXPAND_SUCCESS,
+} from '../actions/mutes';
+import { COMPOSE_SUGGESTIONS_READY } from '../actions/compose';
+import {
+  REBLOG_SUCCESS,
+  UNREBLOG_SUCCESS,
+  FAVOURITE_SUCCESS,
+  UNFAVOURITE_SUCCESS,
+  REBLOGS_FETCH_SUCCESS,
+  FAVOURITES_FETCH_SUCCESS,
+} from '../actions/interactions';
+import {
+  TIMELINE_REFRESH_SUCCESS,
+  TIMELINE_UPDATE,
+  TIMELINE_EXPAND_SUCCESS,
+} from '../actions/timelines';
+import {
+  STATUS_FETCH_SUCCESS,
+  CONTEXT_FETCH_SUCCESS,
+} from '../actions/statuses';
+import { SEARCH_FETCH_SUCCESS } from '../actions/search';
+import {
+  NOTIFICATIONS_UPDATE,
+  NOTIFICATIONS_REFRESH_SUCCESS,
+  NOTIFICATIONS_EXPAND_SUCCESS,
+} from '../actions/notifications';
+import {
+  FAVOURITED_STATUSES_FETCH_SUCCESS,
+  FAVOURITED_STATUSES_EXPAND_SUCCESS,
+} from '../actions/favourites';
+import { STORE_HYDRATE } from '../actions/store';
+import { Map as ImmutableMap, fromJS } from 'immutable';
+
+const normalizeAccount = (state, account) => state.set(account.id, fromJS({
+  followers_count: account.followers_count,
+  following_count: account.following_count,
+  statuses_count: account.statuses_count,
+}));
+
+const normalizeAccounts = (state, accounts) => {
+  accounts.forEach(account => {
+    state = normalizeAccount(state, account);
+  });
+
+  return state;
+};
+
+const normalizeAccountFromStatus = (state, status) => {
+  state = normalizeAccount(state, status.account);
+
+  if (status.reblog && status.reblog.account) {
+    state = normalizeAccount(state, status.reblog.account);
+  }
+
+  return state;
+};
+
+const normalizeAccountsFromStatuses = (state, statuses) => {
+  statuses.forEach(status => {
+    state = normalizeAccountFromStatus(state, status);
+  });
+
+  return state;
+};
+
+const initialState = ImmutableMap();
+
+export default function accountsCounters(state = initialState, action) {
+  switch(action.type) {
+  case STORE_HYDRATE:
+    return state.merge(action.state.get('accounts').map(item => fromJS({
+      followers_count: item.get('followers_count'),
+      following_count: item.get('following_count'),
+      statuses_count: item.get('statuses_count'),
+    })));
+  case ACCOUNT_FETCH_SUCCESS:
+  case NOTIFICATIONS_UPDATE:
+    return normalizeAccount(state, action.account);
+  case FOLLOWERS_FETCH_SUCCESS:
+  case FOLLOWERS_EXPAND_SUCCESS:
+  case FOLLOWING_FETCH_SUCCESS:
+  case FOLLOWING_EXPAND_SUCCESS:
+  case REBLOGS_FETCH_SUCCESS:
+  case FAVOURITES_FETCH_SUCCESS:
+  case COMPOSE_SUGGESTIONS_READY:
+  case FOLLOW_REQUESTS_FETCH_SUCCESS:
+  case FOLLOW_REQUESTS_EXPAND_SUCCESS:
+  case BLOCKS_FETCH_SUCCESS:
+  case BLOCKS_EXPAND_SUCCESS:
+  case MUTES_FETCH_SUCCESS:
+  case MUTES_EXPAND_SUCCESS:
+    return action.accounts ? normalizeAccounts(state, action.accounts) : state;
+  case NOTIFICATIONS_REFRESH_SUCCESS:
+  case NOTIFICATIONS_EXPAND_SUCCESS:
+  case SEARCH_FETCH_SUCCESS:
+    return normalizeAccountsFromStatuses(normalizeAccounts(state, action.accounts), action.statuses);
+  case TIMELINE_REFRESH_SUCCESS:
+  case TIMELINE_EXPAND_SUCCESS:
+  case CONTEXT_FETCH_SUCCESS:
+  case FAVOURITED_STATUSES_FETCH_SUCCESS:
+  case FAVOURITED_STATUSES_EXPAND_SUCCESS:
+    return normalizeAccountsFromStatuses(state, action.statuses);
+  case REBLOG_SUCCESS:
+  case FAVOURITE_SUCCESS:
+  case UNREBLOG_SUCCESS:
+  case UNFAVOURITE_SUCCESS:
+    return normalizeAccountFromStatus(state, action.response);
+  case TIMELINE_UPDATE:
+  case STATUS_FETCH_SUCCESS:
+    return normalizeAccountFromStatus(state, action.status);
+  case ACCOUNT_FOLLOW_SUCCESS:
+    return state.updateIn([action.relationship.id, 'followers_count'], num => num + 1);
+  case ACCOUNT_UNFOLLOW_SUCCESS:
+    return state.updateIn([action.relationship.id, 'followers_count'], num => Math.max(0, num - 1));
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/alerts.js b/app/javascript/mastodon/reducers/alerts.js
new file mode 100644
index 00000000000..089d920c3e4
--- /dev/null
+++ b/app/javascript/mastodon/reducers/alerts.js
@@ -0,0 +1,25 @@
+import {
+  ALERT_SHOW,
+  ALERT_DISMISS,
+  ALERT_CLEAR,
+} from '../actions/alerts';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
+
+const initialState = ImmutableList([]);
+
+export default function alerts(state = initialState, action) {
+  switch(action.type) {
+  case ALERT_SHOW:
+    return state.push(ImmutableMap({
+      key: state.size > 0 ? state.last().get('key') + 1 : 0,
+      title: action.title,
+      message: action.message,
+    }));
+  case ALERT_DISMISS:
+    return state.filterNot(item => item.get('key') === action.alert.key);
+  case ALERT_CLEAR:
+    return state.clear();
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/cards.js b/app/javascript/mastodon/reducers/cards.js
new file mode 100644
index 00000000000..4d86b0d7e7a
--- /dev/null
+++ b/app/javascript/mastodon/reducers/cards.js
@@ -0,0 +1,14 @@
+import { STATUS_CARD_FETCH_SUCCESS } from '../actions/cards';
+
+import { Map as ImmutableMap, fromJS } from 'immutable';
+
+const initialState = ImmutableMap();
+
+export default function cards(state = initialState, action) {
+  switch(action.type) {
+  case STATUS_CARD_FETCH_SUCCESS:
+    return state.set(action.id, fromJS(action.card));
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/compose.js b/app/javascript/mastodon/reducers/compose.js
new file mode 100644
index 00000000000..c709fb88c9d
--- /dev/null
+++ b/app/javascript/mastodon/reducers/compose.js
@@ -0,0 +1,276 @@
+import {
+  COMPOSE_MOUNT,
+  COMPOSE_UNMOUNT,
+  COMPOSE_CHANGE,
+  COMPOSE_REPLY,
+  COMPOSE_REPLY_CANCEL,
+  COMPOSE_MENTION,
+  COMPOSE_SUBMIT_REQUEST,
+  COMPOSE_SUBMIT_SUCCESS,
+  COMPOSE_SUBMIT_FAIL,
+  COMPOSE_UPLOAD_REQUEST,
+  COMPOSE_UPLOAD_SUCCESS,
+  COMPOSE_UPLOAD_FAIL,
+  COMPOSE_UPLOAD_UNDO,
+  COMPOSE_UPLOAD_PROGRESS,
+  COMPOSE_SUGGESTIONS_CLEAR,
+  COMPOSE_SUGGESTIONS_READY,
+  COMPOSE_SUGGESTION_SELECT,
+  COMPOSE_SENSITIVITY_CHANGE,
+  COMPOSE_SPOILERNESS_CHANGE,
+  COMPOSE_SPOILER_TEXT_CHANGE,
+  COMPOSE_VISIBILITY_CHANGE,
+  COMPOSE_COMPOSING_CHANGE,
+  COMPOSE_EMOJI_INSERT,
+  COMPOSE_UPLOAD_CHANGE_REQUEST,
+  COMPOSE_UPLOAD_CHANGE_SUCCESS,
+  COMPOSE_UPLOAD_CHANGE_FAIL,
+  COMPOSE_RESET,
+} from '../actions/compose';
+import { TIMELINE_DELETE } from '../actions/timelines';
+import { STORE_HYDRATE } from '../actions/store';
+import { Map as ImmutableMap, List as ImmutableList, OrderedSet as ImmutableOrderedSet, fromJS } from 'immutable';
+import uuid from '../uuid';
+import { me } from '../initial_state';
+
+const initialState = ImmutableMap({
+  mounted: false,
+  sensitive: false,
+  spoiler: false,
+  spoiler_text: '',
+  privacy: null,
+  text: '',
+  focusDate: null,
+  preselectDate: null,
+  in_reply_to: null,
+  is_composing: false,
+  is_submitting: false,
+  is_uploading: false,
+  progress: 0,
+  media_attachments: ImmutableList(),
+  suggestion_token: null,
+  suggestions: ImmutableList(),
+  default_privacy: 'public',
+  default_sensitive: false,
+  resetFileKey: Math.floor((Math.random() * 0x10000)),
+  idempotencyKey: null,
+});
+
+function statusToTextMentions(state, status) {
+  let set = ImmutableOrderedSet([]);
+
+  if (status.getIn(['account', 'id']) !== me) {
+    set = set.add(`@${status.getIn(['account', 'acct'])} `);
+  }
+
+  return set.union(status.get('mentions').filterNot(mention => mention.get('id') === me).map(mention => `@${mention.get('acct')} `)).join('');
+};
+
+function clearAll(state) {
+  return state.withMutations(map => {
+    map.set('text', '');
+    map.set('spoiler', false);
+    map.set('spoiler_text', '');
+    map.set('is_submitting', false);
+    map.set('in_reply_to', null);
+    map.set('privacy', state.get('default_privacy'));
+    map.set('sensitive', false);
+    map.update('media_attachments', list => list.clear());
+    map.set('idempotencyKey', uuid());
+  });
+};
+
+function appendMedia(state, media) {
+  const prevSize = state.get('media_attachments').size;
+
+  return state.withMutations(map => {
+    map.update('media_attachments', list => list.push(media));
+    map.set('is_uploading', false);
+    map.set('resetFileKey', Math.floor((Math.random() * 0x10000)));
+    map.update('text', oldText => `${oldText.trim()} ${media.get('text_url')}`);
+    map.set('focusDate', new Date());
+    map.set('idempotencyKey', uuid());
+
+    if (prevSize === 0 && (state.get('default_sensitive') || state.get('spoiler'))) {
+      map.set('sensitive', true);
+    }
+  });
+};
+
+function removeMedia(state, mediaId) {
+  const media    = state.get('media_attachments').find(item => item.get('id') === mediaId);
+  const prevSize = state.get('media_attachments').size;
+
+  return state.withMutations(map => {
+    map.update('media_attachments', list => list.filterNot(item => item.get('id') === mediaId));
+    map.update('text', text => text.replace(media.get('text_url'), '').trim());
+    map.set('idempotencyKey', uuid());
+
+    if (prevSize === 1) {
+      map.set('sensitive', false);
+    }
+  });
+};
+
+const insertSuggestion = (state, position, token, completion) => {
+  return state.withMutations(map => {
+    map.update('text', oldText => `${oldText.slice(0, position)}${completion} ${oldText.slice(position + token.length)}`);
+    map.set('suggestion_token', null);
+    map.update('suggestions', ImmutableList(), list => list.clear());
+    map.set('focusDate', new Date());
+    map.set('idempotencyKey', uuid());
+  });
+};
+
+const insertEmoji = (state, position, emojiData) => {
+  const emoji = emojiData.native;
+
+  return state.withMutations(map => {
+    map.update('text', oldText => `${oldText.slice(0, position)}${emoji} ${oldText.slice(position)}`);
+    map.set('focusDate', new Date());
+    map.set('idempotencyKey', uuid());
+  });
+};
+
+const privacyPreference = (a, b) => {
+  if (a === 'direct' || b === 'direct') {
+    return 'direct';
+  } else if (a === 'private' || b === 'private') {
+    return 'private';
+  } else if (a === 'unlisted' || b === 'unlisted') {
+    return 'unlisted';
+  } else {
+    return 'public';
+  }
+};
+
+const hydrate = (state, hydratedState) => {
+  state = clearAll(state.merge(hydratedState));
+
+  if (hydratedState.has('text')) {
+    state = state.set('text', hydratedState.get('text'));
+  }
+
+  return state;
+};
+
+export default function compose(state = initialState, action) {
+  switch(action.type) {
+  case STORE_HYDRATE:
+    return hydrate(state, action.state.get('compose'));
+  case COMPOSE_MOUNT:
+    return state.set('mounted', true);
+  case COMPOSE_UNMOUNT:
+    return state
+      .set('mounted', false)
+      .set('is_composing', false);
+  case COMPOSE_SENSITIVITY_CHANGE:
+    return state.withMutations(map => {
+      if (!state.get('spoiler')) {
+        map.set('sensitive', !state.get('sensitive'));
+      }
+
+      map.set('idempotencyKey', uuid());
+    });
+  case COMPOSE_SPOILERNESS_CHANGE:
+    return state.withMutations(map => {
+      map.set('spoiler_text', '');
+      map.set('spoiler', !state.get('spoiler'));
+      map.set('idempotencyKey', uuid());
+
+      if (!state.get('sensitive') && state.get('media_attachments').size >= 1) {
+        map.set('sensitive', true);
+      }
+    });
+  case COMPOSE_SPOILER_TEXT_CHANGE:
+    return state
+      .set('spoiler_text', action.text)
+      .set('idempotencyKey', uuid());
+  case COMPOSE_VISIBILITY_CHANGE:
+    return state
+      .set('privacy', action.value)
+      .set('idempotencyKey', uuid());
+  case COMPOSE_CHANGE:
+    return state
+      .set('text', action.text)
+      .set('idempotencyKey', uuid());
+  case COMPOSE_COMPOSING_CHANGE:
+    return state.set('is_composing', action.value);
+  case COMPOSE_REPLY:
+    return state.withMutations(map => {
+      map.set('in_reply_to', action.status.get('id'));
+      map.set('text', statusToTextMentions(state, action.status));
+      map.set('privacy', privacyPreference(action.status.get('visibility'), state.get('default_privacy')));
+      map.set('focusDate', new Date());
+      map.set('preselectDate', new Date());
+      map.set('idempotencyKey', uuid());
+
+      if (action.status.get('spoiler_text').length > 0) {
+        map.set('spoiler', true);
+        map.set('spoiler_text', action.status.get('spoiler_text'));
+      } else {
+        map.set('spoiler', false);
+        map.set('spoiler_text', '');
+      }
+    });
+  case COMPOSE_REPLY_CANCEL:
+  case COMPOSE_RESET:
+    return state.withMutations(map => {
+      map.set('in_reply_to', null);
+      map.set('text', '');
+      map.set('spoiler', false);
+      map.set('spoiler_text', '');
+      map.set('privacy', state.get('default_privacy'));
+      map.set('idempotencyKey', uuid());
+    });
+  case COMPOSE_SUBMIT_REQUEST:
+  case COMPOSE_UPLOAD_CHANGE_REQUEST:
+    return state.set('is_submitting', true);
+  case COMPOSE_SUBMIT_SUCCESS:
+    return clearAll(state);
+  case COMPOSE_SUBMIT_FAIL:
+  case COMPOSE_UPLOAD_CHANGE_FAIL:
+    return state.set('is_submitting', false);
+  case COMPOSE_UPLOAD_REQUEST:
+    return state.set('is_uploading', true);
+  case COMPOSE_UPLOAD_SUCCESS:
+    return appendMedia(state, fromJS(action.media));
+  case COMPOSE_UPLOAD_FAIL:
+    return state.set('is_uploading', false);
+  case COMPOSE_UPLOAD_UNDO:
+    return removeMedia(state, action.media_id);
+  case COMPOSE_UPLOAD_PROGRESS:
+    return state.set('progress', Math.round((action.loaded / action.total) * 100));
+  case COMPOSE_MENTION:
+    return state
+      .update('text', text => `${text}@${action.account.get('acct')} `)
+      .set('focusDate', new Date())
+      .set('idempotencyKey', uuid());
+  case COMPOSE_SUGGESTIONS_CLEAR:
+    return state.update('suggestions', ImmutableList(), list => list.clear()).set('suggestion_token', null);
+  case COMPOSE_SUGGESTIONS_READY:
+    return state.set('suggestions', ImmutableList(action.accounts ? action.accounts.map(item => item.id) : action.emojis)).set('suggestion_token', action.token);
+  case COMPOSE_SUGGESTION_SELECT:
+    return insertSuggestion(state, action.position, action.token, action.completion);
+  case TIMELINE_DELETE:
+    if (action.id === state.get('in_reply_to')) {
+      return state.set('in_reply_to', null);
+    } else {
+      return state;
+    }
+  case COMPOSE_EMOJI_INSERT:
+    return insertEmoji(state, action.position, action.emoji);
+  case COMPOSE_UPLOAD_CHANGE_SUCCESS:
+    return state
+      .set('is_submitting', false)
+      .update('media_attachments', list => list.map(item => {
+        if (item.get('id') === action.media.id) {
+          return item.set('description', action.media.description);
+        }
+
+        return item;
+      }));
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/contexts.js b/app/javascript/mastodon/reducers/contexts.js
new file mode 100644
index 00000000000..64d584a019c
--- /dev/null
+++ b/app/javascript/mastodon/reducers/contexts.js
@@ -0,0 +1,61 @@
+import { CONTEXT_FETCH_SUCCESS } from '../actions/statuses';
+import { TIMELINE_DELETE, TIMELINE_CONTEXT_UPDATE } from '../actions/timelines';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
+
+const initialState = ImmutableMap({
+  ancestors: ImmutableMap(),
+  descendants: ImmutableMap(),
+});
+
+const normalizeContext = (state, id, ancestors, descendants) => {
+  const ancestorsIds   = ImmutableList(ancestors.map(ancestor => ancestor.id));
+  const descendantsIds = ImmutableList(descendants.map(descendant => descendant.id));
+
+  return state.withMutations(map => {
+    map.setIn(['ancestors', id], ancestorsIds);
+    map.setIn(['descendants', id], descendantsIds);
+  });
+};
+
+const deleteFromContexts = (state, id) => {
+  state.getIn(['descendants', id], ImmutableList()).forEach(descendantId => {
+    state = state.updateIn(['ancestors', descendantId], ImmutableList(), list => list.filterNot(itemId => itemId === id));
+  });
+
+  state.getIn(['ancestors', id], ImmutableList()).forEach(ancestorId => {
+    state = state.updateIn(['descendants', ancestorId], ImmutableList(), list => list.filterNot(itemId => itemId === id));
+  });
+
+  state = state.deleteIn(['descendants', id]).deleteIn(['ancestors', id]);
+
+  return state;
+};
+
+const updateContext = (state, status, references) => {
+  return state.update('descendants', map => {
+    references.forEach(parentId => {
+      map = map.update(parentId, ImmutableList(), list => {
+        if (list.includes(status.id)) {
+          return list;
+        }
+
+        return list.push(status.id);
+      });
+    });
+
+    return map;
+  });
+};
+
+export default function contexts(state = initialState, action) {
+  switch(action.type) {
+  case CONTEXT_FETCH_SUCCESS:
+    return normalizeContext(state, action.id, action.ancestors, action.descendants);
+  case TIMELINE_DELETE:
+    return deleteFromContexts(state, action.id);
+  case TIMELINE_CONTEXT_UPDATE:
+    return updateContext(state, action.status, action.references);
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/custom_emojis.js b/app/javascript/mastodon/reducers/custom_emojis.js
new file mode 100644
index 00000000000..307bcc7dc45
--- /dev/null
+++ b/app/javascript/mastodon/reducers/custom_emojis.js
@@ -0,0 +1,16 @@
+import { List as ImmutableList } from 'immutable';
+import { STORE_HYDRATE } from '../actions/store';
+import { search as emojiSearch } from '../features/emoji/emoji_mart_search_light';
+import { buildCustomEmojis } from '../features/emoji/emoji';
+
+const initialState = ImmutableList();
+
+export default function custom_emojis(state = initialState, action) {
+  switch(action.type) {
+  case STORE_HYDRATE:
+    emojiSearch('', { custom: buildCustomEmojis(action.state.get('custom_emojis', [])) });
+    return action.state.get('custom_emojis');
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/height_cache.js b/app/javascript/mastodon/reducers/height_cache.js
new file mode 100644
index 00000000000..2f5716fae94
--- /dev/null
+++ b/app/javascript/mastodon/reducers/height_cache.js
@@ -0,0 +1,23 @@
+import { Map as ImmutableMap } from 'immutable';
+import { HEIGHT_CACHE_SET, HEIGHT_CACHE_CLEAR } from '../actions/height_cache';
+
+const initialState = ImmutableMap();
+
+const setHeight = (state, key, id, height) => {
+  return state.update(key, ImmutableMap(), map => map.set(id, height));
+};
+
+const clearHeights = () => {
+  return ImmutableMap();
+};
+
+export default function statuses(state = initialState, action) {
+  switch(action.type) {
+  case HEIGHT_CACHE_SET:
+    return setHeight(state, action.key, action.id, action.height);
+  case HEIGHT_CACHE_CLEAR:
+    return clearHeights();
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/index.js b/app/javascript/mastodon/reducers/index.js
new file mode 100644
index 00000000000..17c87035150
--- /dev/null
+++ b/app/javascript/mastodon/reducers/index.js
@@ -0,0 +1,52 @@
+import { combineReducers } from 'redux-immutable';
+import timelines from './timelines';
+import meta from './meta';
+import alerts from './alerts';
+import { loadingBarReducer } from 'react-redux-loading-bar';
+import modal from './modal';
+import user_lists from './user_lists';
+import accounts from './accounts';
+import accounts_counters from './accounts_counters';
+import statuses from './statuses';
+import relationships from './relationships';
+import settings from './settings';
+import push_notifications from './push_notifications';
+import status_lists from './status_lists';
+import cards from './cards';
+import mutes from './mutes';
+import reports from './reports';
+import contexts from './contexts';
+import compose from './compose';
+import search from './search';
+import media_attachments from './media_attachments';
+import notifications from './notifications';
+import height_cache from './height_cache';
+import custom_emojis from './custom_emojis';
+
+const reducers = {
+  timelines,
+  meta,
+  alerts,
+  loadingBar: loadingBarReducer,
+  modal,
+  user_lists,
+  status_lists,
+  accounts,
+  accounts_counters,
+  statuses,
+  relationships,
+  settings,
+  push_notifications,
+  cards,
+  mutes,
+  reports,
+  contexts,
+  compose,
+  search,
+  media_attachments,
+  notifications,
+  height_cache,
+  custom_emojis,
+};
+
+export default combineReducers(reducers);
diff --git a/app/javascript/mastodon/reducers/media_attachments.js b/app/javascript/mastodon/reducers/media_attachments.js
new file mode 100644
index 00000000000..24119f6286b
--- /dev/null
+++ b/app/javascript/mastodon/reducers/media_attachments.js
@@ -0,0 +1,15 @@
+import { STORE_HYDRATE } from '../actions/store';
+import { Map as ImmutableMap } from 'immutable';
+
+const initialState = ImmutableMap({
+  accept_content_types: [],
+});
+
+export default function meta(state = initialState, action) {
+  switch(action.type) {
+  case STORE_HYDRATE:
+    return state.merge(action.state.get('media_attachments'));
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/meta.js b/app/javascript/mastodon/reducers/meta.js
new file mode 100644
index 00000000000..36a5a1c3540
--- /dev/null
+++ b/app/javascript/mastodon/reducers/meta.js
@@ -0,0 +1,16 @@
+import { STORE_HYDRATE } from '../actions/store';
+import { Map as ImmutableMap } from 'immutable';
+
+const initialState = ImmutableMap({
+  streaming_api_base_url: null,
+  access_token: null,
+});
+
+export default function meta(state = initialState, action) {
+  switch(action.type) {
+  case STORE_HYDRATE:
+    return state.merge(action.state.get('meta'));
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/modal.js b/app/javascript/mastodon/reducers/modal.js
new file mode 100644
index 00000000000..599a2443e0d
--- /dev/null
+++ b/app/javascript/mastodon/reducers/modal.js
@@ -0,0 +1,17 @@
+import { MODAL_OPEN, MODAL_CLOSE } from '../actions/modal';
+
+const initialState = {
+  modalType: null,
+  modalProps: {},
+};
+
+export default function modal(state = initialState, action) {
+  switch(action.type) {
+  case MODAL_OPEN:
+    return { modalType: action.modalType, modalProps: action.modalProps };
+  case MODAL_CLOSE:
+    return initialState;
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/mutes.js b/app/javascript/mastodon/reducers/mutes.js
new file mode 100644
index 00000000000..a96232dbd23
--- /dev/null
+++ b/app/javascript/mastodon/reducers/mutes.js
@@ -0,0 +1,29 @@
+import Immutable from 'immutable';
+
+import {
+  MUTES_INIT_MODAL,
+  MUTES_TOGGLE_HIDE_NOTIFICATIONS,
+} from '../actions/mutes';
+
+const initialState = Immutable.Map({
+  new: Immutable.Map({
+    isSubmitting: false,
+    account: null,
+    notifications: true,
+  }),
+});
+
+export default function mutes(state = initialState, action) {
+  switch (action.type) {
+  case MUTES_INIT_MODAL:
+    return state.withMutations((state) => {
+      state.setIn(['new', 'isSubmitting'], false);
+      state.setIn(['new', 'account'], action.account);
+      state.setIn(['new', 'notifications'], true);
+    });
+  case MUTES_TOGGLE_HIDE_NOTIFICATIONS:
+    return state.updateIn(['new', 'notifications'], (old) => !old);
+  default:
+    return state;
+  }
+}
diff --git a/app/javascript/mastodon/reducers/notifications.js b/app/javascript/mastodon/reducers/notifications.js
new file mode 100644
index 00000000000..264db4f558f
--- /dev/null
+++ b/app/javascript/mastodon/reducers/notifications.js
@@ -0,0 +1,124 @@
+import {
+  NOTIFICATIONS_UPDATE,
+  NOTIFICATIONS_REFRESH_SUCCESS,
+  NOTIFICATIONS_EXPAND_SUCCESS,
+  NOTIFICATIONS_REFRESH_REQUEST,
+  NOTIFICATIONS_EXPAND_REQUEST,
+  NOTIFICATIONS_REFRESH_FAIL,
+  NOTIFICATIONS_EXPAND_FAIL,
+  NOTIFICATIONS_CLEAR,
+  NOTIFICATIONS_SCROLL_TOP,
+} from '../actions/notifications';
+import {
+  ACCOUNT_BLOCK_SUCCESS,
+  ACCOUNT_MUTE_SUCCESS,
+} from '../actions/accounts';
+import { TIMELINE_DELETE } from '../actions/timelines';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
+
+const initialState = ImmutableMap({
+  items: ImmutableList(),
+  next: null,
+  top: true,
+  unread: 0,
+  loaded: false,
+  isLoading: true,
+});
+
+const notificationToMap = notification => ImmutableMap({
+  id: notification.id,
+  type: notification.type,
+  account: notification.account.id,
+  status: notification.status ? notification.status.id : null,
+});
+
+const normalizeNotification = (state, notification) => {
+  const top = state.get('top');
+
+  if (!top) {
+    state = state.update('unread', unread => unread + 1);
+  }
+
+  return state.update('items', list => {
+    if (top && list.size > 40) {
+      list = list.take(20);
+    }
+
+    return list.unshift(notificationToMap(notification));
+  });
+};
+
+const normalizeNotifications = (state, notifications, next) => {
+  let items    = ImmutableList();
+  const loaded = state.get('loaded');
+
+  notifications.forEach((n, i) => {
+    items = items.set(i, notificationToMap(n));
+  });
+
+  if (state.get('next') === null) {
+    state = state.set('next', next);
+  }
+
+  return state
+    .update('items', list => loaded ? items.concat(list) : list.concat(items))
+    .set('loaded', true)
+    .set('isLoading', false);
+};
+
+const appendNormalizedNotifications = (state, notifications, next) => {
+  let items = ImmutableList();
+
+  notifications.forEach((n, i) => {
+    items = items.set(i, notificationToMap(n));
+  });
+
+  return state
+    .update('items', list => list.concat(items))
+    .set('next', next)
+    .set('isLoading', false);
+};
+
+const filterNotifications = (state, relationship) => {
+  return state.update('items', list => list.filterNot(item => item.get('account') === relationship.id));
+};
+
+const updateTop = (state, top) => {
+  if (top) {
+    state = state.set('unread', 0);
+  }
+
+  return state.set('top', top);
+};
+
+const deleteByStatus = (state, statusId) => {
+  return state.update('items', list => list.filterNot(item => item.get('status') === statusId));
+};
+
+export default function notifications(state = initialState, action) {
+  switch(action.type) {
+  case NOTIFICATIONS_REFRESH_REQUEST:
+  case NOTIFICATIONS_EXPAND_REQUEST:
+    return state.set('isLoading', true);
+  case NOTIFICATIONS_REFRESH_FAIL:
+  case NOTIFICATIONS_EXPAND_FAIL:
+    return state.set('isLoading', false);
+  case NOTIFICATIONS_SCROLL_TOP:
+    return updateTop(state, action.top);
+  case NOTIFICATIONS_UPDATE:
+    return normalizeNotification(state, action.notification);
+  case NOTIFICATIONS_REFRESH_SUCCESS:
+    return normalizeNotifications(state, action.notifications, action.next);
+  case NOTIFICATIONS_EXPAND_SUCCESS:
+    return appendNormalizedNotifications(state, action.notifications, action.next);
+  case ACCOUNT_BLOCK_SUCCESS:
+  case ACCOUNT_MUTE_SUCCESS:
+    return filterNotifications(state, action.relationship);
+  case NOTIFICATIONS_CLEAR:
+    return state.set('items', ImmutableList()).set('next', null);
+  case TIMELINE_DELETE:
+    return deleteByStatus(state, action.id);
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/push_notifications.js b/app/javascript/mastodon/reducers/push_notifications.js
new file mode 100644
index 00000000000..31a40d24612
--- /dev/null
+++ b/app/javascript/mastodon/reducers/push_notifications.js
@@ -0,0 +1,51 @@
+import { STORE_HYDRATE } from '../actions/store';
+import { SET_BROWSER_SUPPORT, SET_SUBSCRIPTION, CLEAR_SUBSCRIPTION, ALERTS_CHANGE } from '../actions/push_notifications';
+import Immutable from 'immutable';
+
+const initialState = Immutable.Map({
+  subscription: null,
+  alerts: new Immutable.Map({
+    follow: false,
+    favourite: false,
+    reblog: false,
+    mention: false,
+  }),
+  isSubscribed: false,
+  browserSupport: false,
+});
+
+export default function push_subscriptions(state = initialState, action) {
+  switch(action.type) {
+  case STORE_HYDRATE: {
+    const push_subscription = action.state.get('push_subscription');
+
+    if (push_subscription) {
+      return state
+        .set('subscription', new Immutable.Map({
+          id: push_subscription.get('id'),
+          endpoint: push_subscription.get('endpoint'),
+        }))
+        .set('alerts', push_subscription.get('alerts') || initialState.get('alerts'))
+        .set('isSubscribed', true);
+    }
+
+    return state;
+  }
+  case SET_SUBSCRIPTION:
+    return state
+      .set('subscription', new Immutable.Map({
+        id: action.subscription.id,
+        endpoint: action.subscription.endpoint,
+      }))
+      .set('alerts', new Immutable.Map(action.subscription.alerts))
+      .set('isSubscribed', true);
+  case SET_BROWSER_SUPPORT:
+    return state.set('browserSupport', action.value);
+  case CLEAR_SUBSCRIPTION:
+    return initialState;
+  case ALERTS_CHANGE:
+    return state.setIn(action.key, action.value);
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/relationships.js b/app/javascript/mastodon/reducers/relationships.js
new file mode 100644
index 00000000000..c7b04a66836
--- /dev/null
+++ b/app/javascript/mastodon/reducers/relationships.js
@@ -0,0 +1,46 @@
+import {
+  ACCOUNT_FOLLOW_SUCCESS,
+  ACCOUNT_UNFOLLOW_SUCCESS,
+  ACCOUNT_BLOCK_SUCCESS,
+  ACCOUNT_UNBLOCK_SUCCESS,
+  ACCOUNT_MUTE_SUCCESS,
+  ACCOUNT_UNMUTE_SUCCESS,
+  RELATIONSHIPS_FETCH_SUCCESS,
+} from '../actions/accounts';
+import {
+  DOMAIN_BLOCK_SUCCESS,
+  DOMAIN_UNBLOCK_SUCCESS,
+} from '../actions/domain_blocks';
+import { Map as ImmutableMap, fromJS } from 'immutable';
+
+const normalizeRelationship = (state, relationship) => state.set(relationship.id, fromJS(relationship));
+
+const normalizeRelationships = (state, relationships) => {
+  relationships.forEach(relationship => {
+    state = normalizeRelationship(state, relationship);
+  });
+
+  return state;
+};
+
+const initialState = ImmutableMap();
+
+export default function relationships(state = initialState, action) {
+  switch(action.type) {
+  case ACCOUNT_FOLLOW_SUCCESS:
+  case ACCOUNT_UNFOLLOW_SUCCESS:
+  case ACCOUNT_BLOCK_SUCCESS:
+  case ACCOUNT_UNBLOCK_SUCCESS:
+  case ACCOUNT_MUTE_SUCCESS:
+  case ACCOUNT_UNMUTE_SUCCESS:
+    return normalizeRelationship(state, action.relationship);
+  case RELATIONSHIPS_FETCH_SUCCESS:
+    return normalizeRelationships(state, action.relationships);
+  case DOMAIN_BLOCK_SUCCESS:
+    return state.setIn([action.accountId, 'domain_blocking'], true);
+  case DOMAIN_UNBLOCK_SUCCESS:
+    return state.setIn([action.accountId, 'domain_blocking'], false);
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/reports.js b/app/javascript/mastodon/reducers/reports.js
new file mode 100644
index 00000000000..a08bbec387d
--- /dev/null
+++ b/app/javascript/mastodon/reducers/reports.js
@@ -0,0 +1,60 @@
+import {
+  REPORT_INIT,
+  REPORT_SUBMIT_REQUEST,
+  REPORT_SUBMIT_SUCCESS,
+  REPORT_SUBMIT_FAIL,
+  REPORT_CANCEL,
+  REPORT_STATUS_TOGGLE,
+  REPORT_COMMENT_CHANGE,
+} from '../actions/reports';
+import { Map as ImmutableMap, Set as ImmutableSet } from 'immutable';
+
+const initialState = ImmutableMap({
+  new: ImmutableMap({
+    isSubmitting: false,
+    account_id: null,
+    status_ids: ImmutableSet(),
+    comment: '',
+  }),
+});
+
+export default function reports(state = initialState, action) {
+  switch(action.type) {
+  case REPORT_INIT:
+    return state.withMutations(map => {
+      map.setIn(['new', 'isSubmitting'], false);
+      map.setIn(['new', 'account_id'], action.account.get('id'));
+
+      if (state.getIn(['new', 'account_id']) !== action.account.get('id')) {
+        map.setIn(['new', 'status_ids'], action.status ? ImmutableSet([action.status.getIn(['reblog', 'id'], action.status.get('id'))]) : ImmutableSet());
+        map.setIn(['new', 'comment'], '');
+      } else if (action.status) {
+        map.updateIn(['new', 'status_ids'], ImmutableSet(), set => set.add(action.status.getIn(['reblog', 'id'], action.status.get('id'))));
+      }
+    });
+  case REPORT_STATUS_TOGGLE:
+    return state.updateIn(['new', 'status_ids'], ImmutableSet(), set => {
+      if (action.checked) {
+        return set.add(action.statusId);
+      }
+
+      return set.remove(action.statusId);
+    });
+  case REPORT_COMMENT_CHANGE:
+    return state.setIn(['new', 'comment'], action.comment);
+  case REPORT_SUBMIT_REQUEST:
+    return state.setIn(['new', 'isSubmitting'], true);
+  case REPORT_SUBMIT_FAIL:
+    return state.setIn(['new', 'isSubmitting'], false);
+  case REPORT_CANCEL:
+  case REPORT_SUBMIT_SUCCESS:
+    return state.withMutations(map => {
+      map.setIn(['new', 'account_id'], null);
+      map.setIn(['new', 'status_ids'], ImmutableSet());
+      map.setIn(['new', 'comment'], '');
+      map.setIn(['new', 'isSubmitting'], false);
+    });
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/search.js b/app/javascript/mastodon/reducers/search.js
new file mode 100644
index 00000000000..08d90e4e83c
--- /dev/null
+++ b/app/javascript/mastodon/reducers/search.js
@@ -0,0 +1,42 @@
+import {
+  SEARCH_CHANGE,
+  SEARCH_CLEAR,
+  SEARCH_FETCH_SUCCESS,
+  SEARCH_SHOW,
+} from '../actions/search';
+import { COMPOSE_MENTION, COMPOSE_REPLY } from '../actions/compose';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
+
+const initialState = ImmutableMap({
+  value: '',
+  submitted: false,
+  hidden: false,
+  results: ImmutableMap(),
+});
+
+export default function search(state = initialState, action) {
+  switch(action.type) {
+  case SEARCH_CHANGE:
+    return state.set('value', action.value);
+  case SEARCH_CLEAR:
+    return state.withMutations(map => {
+      map.set('value', '');
+      map.set('results', ImmutableMap());
+      map.set('submitted', false);
+      map.set('hidden', false);
+    });
+  case SEARCH_SHOW:
+    return state.set('hidden', false);
+  case COMPOSE_REPLY:
+  case COMPOSE_MENTION:
+    return state.set('hidden', true);
+  case SEARCH_FETCH_SUCCESS:
+    return state.set('results', ImmutableMap({
+      accounts: ImmutableList(action.results.accounts.map(item => item.id)),
+      statuses: ImmutableList(action.results.statuses.map(item => item.id)),
+      hashtags: ImmutableList(action.results.hashtags),
+    })).set('submitted', true);
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/settings.js b/app/javascript/mastodon/reducers/settings.js
new file mode 100644
index 00000000000..a9f3f95296f
--- /dev/null
+++ b/app/javascript/mastodon/reducers/settings.js
@@ -0,0 +1,112 @@
+import { SETTING_CHANGE, SETTING_SAVE } from '../actions/settings';
+import { COLUMN_ADD, COLUMN_REMOVE, COLUMN_MOVE } from '../actions/columns';
+import { STORE_HYDRATE } from '../actions/store';
+import { EMOJI_USE } from '../actions/emojis';
+import { Map as ImmutableMap, fromJS } from 'immutable';
+import uuid from '../uuid';
+
+const initialState = ImmutableMap({
+  saved: true,
+
+  onboarded: false,
+
+  skinTone: 1,
+
+  home: ImmutableMap({
+    shows: ImmutableMap({
+      reblog: true,
+      reply: true,
+    }),
+
+    regex: ImmutableMap({
+      body: '',
+    }),
+  }),
+
+  notifications: ImmutableMap({
+    alerts: ImmutableMap({
+      follow: true,
+      favourite: true,
+      reblog: true,
+      mention: true,
+    }),
+
+    shows: ImmutableMap({
+      follow: true,
+      favourite: true,
+      reblog: true,
+      mention: true,
+    }),
+
+    sounds: ImmutableMap({
+      follow: true,
+      favourite: true,
+      reblog: true,
+      mention: true,
+    }),
+  }),
+
+  community: ImmutableMap({
+    regex: ImmutableMap({
+      body: '',
+    }),
+  }),
+
+  public: ImmutableMap({
+    regex: ImmutableMap({
+      body: '',
+    }),
+  }),
+});
+
+const defaultColumns = fromJS([
+  { id: 'COMPOSE', uuid: uuid(), params: {} },
+  { id: 'HOME', uuid: uuid(), params: {} },
+  { id: 'NOTIFICATIONS', uuid: uuid(), params: {} },
+]);
+
+const hydrate = (state, settings) => state.mergeDeep(settings).update('columns', (val = defaultColumns) => val);
+
+const moveColumn = (state, uuid, direction) => {
+  const columns  = state.get('columns');
+  const index    = columns.findIndex(item => item.get('uuid') === uuid);
+  const newIndex = index + direction;
+
+  let newColumns;
+
+  newColumns = columns.splice(index, 1);
+  newColumns = newColumns.splice(newIndex, 0, columns.get(index));
+
+  return state
+    .set('columns', newColumns)
+    .set('saved', false);
+};
+
+const updateFrequentEmojis = (state, emoji) => state.update('frequentlyUsedEmojis', ImmutableMap(), map => map.update(emoji.id, 0, count => count + 1)).set('saved', false);
+
+export default function settings(state = initialState, action) {
+  switch(action.type) {
+  case STORE_HYDRATE:
+    return hydrate(state, action.state.get('settings'));
+  case SETTING_CHANGE:
+    return state
+      .setIn(action.key, action.value)
+      .set('saved', false);
+  case COLUMN_ADD:
+    return state
+      .update('columns', list => list.push(fromJS({ id: action.id, uuid: uuid(), params: action.params })))
+      .set('saved', false);
+  case COLUMN_REMOVE:
+    return state
+      .update('columns', list => list.filterNot(item => item.get('uuid') === action.uuid))
+      .set('saved', false);
+  case COLUMN_MOVE:
+    return moveColumn(state, action.uuid, action.direction);
+  case EMOJI_USE:
+    return updateFrequentEmojis(state, action.emoji);
+  case SETTING_SAVE:
+    return state.set('saved', true);
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/status_lists.js b/app/javascript/mastodon/reducers/status_lists.js
new file mode 100644
index 00000000000..c4aeb338f47
--- /dev/null
+++ b/app/javascript/mastodon/reducers/status_lists.js
@@ -0,0 +1,75 @@
+import {
+  FAVOURITED_STATUSES_FETCH_SUCCESS,
+  FAVOURITED_STATUSES_EXPAND_SUCCESS,
+} from '../actions/favourites';
+import {
+  PINNED_STATUSES_FETCH_SUCCESS,
+} from '../actions/pin_statuses';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
+import {
+  FAVOURITE_SUCCESS,
+  UNFAVOURITE_SUCCESS,
+  PIN_SUCCESS,
+  UNPIN_SUCCESS,
+} from '../actions/interactions';
+
+const initialState = ImmutableMap({
+  favourites: ImmutableMap({
+    next: null,
+    loaded: false,
+    items: ImmutableList(),
+  }),
+  pins: ImmutableMap({
+    next: null,
+    loaded: false,
+    items: ImmutableList(),
+  }),
+});
+
+const normalizeList = (state, listType, statuses, next) => {
+  return state.update(listType, listMap => listMap.withMutations(map => {
+    map.set('next', next);
+    map.set('loaded', true);
+    map.set('items', ImmutableList(statuses.map(item => item.id)));
+  }));
+};
+
+const appendToList = (state, listType, statuses, next) => {
+  return state.update(listType, listMap => listMap.withMutations(map => {
+    map.set('next', next);
+    map.set('items', map.get('items').concat(statuses.map(item => item.id)));
+  }));
+};
+
+const prependOneToList = (state, listType, status) => {
+  return state.update(listType, listMap => listMap.withMutations(map => {
+    map.set('items', map.get('items').unshift(status.get('id')));
+  }));
+};
+
+const removeOneFromList = (state, listType, status) => {
+  return state.update(listType, listMap => listMap.withMutations(map => {
+    map.set('items', map.get('items').filter(item => item !== status.get('id')));
+  }));
+};
+
+export default function statusLists(state = initialState, action) {
+  switch(action.type) {
+  case FAVOURITED_STATUSES_FETCH_SUCCESS:
+    return normalizeList(state, 'favourites', action.statuses, action.next);
+  case FAVOURITED_STATUSES_EXPAND_SUCCESS:
+    return appendToList(state, 'favourites', action.statuses, action.next);
+  case FAVOURITE_SUCCESS:
+    return prependOneToList(state, 'favourites', action.status);
+  case UNFAVOURITE_SUCCESS:
+    return removeOneFromList(state, 'favourites', action.status);
+  case PINNED_STATUSES_FETCH_SUCCESS:
+    return normalizeList(state, 'pins', action.statuses, action.next);
+  case PIN_SUCCESS:
+    return prependOneToList(state, 'pins', action.status);
+  case UNPIN_SUCCESS:
+    return removeOneFromList(state, 'pins', action.status);
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/statuses.js b/app/javascript/mastodon/reducers/statuses.js
new file mode 100644
index 00000000000..b1fb4c5da34
--- /dev/null
+++ b/app/javascript/mastodon/reducers/statuses.js
@@ -0,0 +1,148 @@
+import {
+  REBLOG_REQUEST,
+  REBLOG_SUCCESS,
+  REBLOG_FAIL,
+  UNREBLOG_SUCCESS,
+  FAVOURITE_REQUEST,
+  FAVOURITE_SUCCESS,
+  FAVOURITE_FAIL,
+  UNFAVOURITE_SUCCESS,
+  PIN_SUCCESS,
+  UNPIN_SUCCESS,
+} from '../actions/interactions';
+import {
+  STATUS_FETCH_SUCCESS,
+  CONTEXT_FETCH_SUCCESS,
+  STATUS_MUTE_SUCCESS,
+  STATUS_UNMUTE_SUCCESS,
+} from '../actions/statuses';
+import {
+  TIMELINE_REFRESH_SUCCESS,
+  TIMELINE_UPDATE,
+  TIMELINE_DELETE,
+  TIMELINE_EXPAND_SUCCESS,
+} from '../actions/timelines';
+import {
+  ACCOUNT_BLOCK_SUCCESS,
+  ACCOUNT_MUTE_SUCCESS,
+} from '../actions/accounts';
+import {
+  NOTIFICATIONS_UPDATE,
+  NOTIFICATIONS_REFRESH_SUCCESS,
+  NOTIFICATIONS_EXPAND_SUCCESS,
+} from '../actions/notifications';
+import {
+  FAVOURITED_STATUSES_FETCH_SUCCESS,
+  FAVOURITED_STATUSES_EXPAND_SUCCESS,
+} from '../actions/favourites';
+import {
+  PINNED_STATUSES_FETCH_SUCCESS,
+} from '../actions/pin_statuses';
+import { SEARCH_FETCH_SUCCESS } from '../actions/search';
+import emojify from '../features/emoji/emoji';
+import { Map as ImmutableMap, fromJS } from 'immutable';
+import escapeTextContentForBrowser from 'escape-html';
+
+const domParser = new DOMParser();
+
+const normalizeStatus = (state, status) => {
+  if (!status) {
+    return state;
+  }
+
+  const normalStatus   = { ...status };
+  normalStatus.account = status.account.id;
+
+  if (status.reblog && status.reblog.id) {
+    state               = normalizeStatus(state, status.reblog);
+    normalStatus.reblog = status.reblog.id;
+  }
+
+  const searchContent = [status.spoiler_text, status.content].join('\n\n').replace(/<br \/>/g, '\n').replace(/<\/p><p>/g, '\n\n');
+
+  const emojiMap = normalStatus.emojis.reduce((obj, emoji) => {
+    obj[`:${emoji.shortcode}:`] = emoji;
+    return obj;
+  }, {});
+
+  normalStatus.search_index = domParser.parseFromString(searchContent, 'text/html').documentElement.textContent;
+  normalStatus.contentHtml = emojify(normalStatus.content, emojiMap);
+  normalStatus.spoilerHtml = emojify(escapeTextContentForBrowser(normalStatus.spoiler_text || ''), emojiMap);
+
+  return state.update(status.id, ImmutableMap(), map => map.mergeDeep(fromJS(normalStatus)));
+};
+
+const normalizeStatuses = (state, statuses) => {
+  statuses.forEach(status => {
+    state = normalizeStatus(state, status);
+  });
+
+  return state;
+};
+
+const deleteStatus = (state, id, references) => {
+  references.forEach(ref => {
+    state = deleteStatus(state, ref[0], []);
+  });
+
+  return state.delete(id);
+};
+
+const filterStatuses = (state, relationship) => {
+  state.forEach(status => {
+    if (status.get('account') !== relationship.id) {
+      return;
+    }
+
+    state = deleteStatus(state, status.get('id'), state.filter(item => item.get('reblog') === status.get('id')));
+  });
+
+  return state;
+};
+
+const initialState = ImmutableMap();
+
+export default function statuses(state = initialState, action) {
+  switch(action.type) {
+  case TIMELINE_UPDATE:
+  case STATUS_FETCH_SUCCESS:
+  case NOTIFICATIONS_UPDATE:
+    return normalizeStatus(state, action.status);
+  case REBLOG_SUCCESS:
+  case UNREBLOG_SUCCESS:
+  case FAVOURITE_SUCCESS:
+  case UNFAVOURITE_SUCCESS:
+  case PIN_SUCCESS:
+  case UNPIN_SUCCESS:
+    return normalizeStatus(state, action.response);
+  case FAVOURITE_REQUEST:
+    return state.setIn([action.status.get('id'), 'favourited'], true);
+  case FAVOURITE_FAIL:
+    return state.setIn([action.status.get('id'), 'favourited'], false);
+  case REBLOG_REQUEST:
+    return state.setIn([action.status.get('id'), 'reblogged'], true);
+  case REBLOG_FAIL:
+    return state.setIn([action.status.get('id'), 'reblogged'], false);
+  case STATUS_MUTE_SUCCESS:
+    return state.setIn([action.id, 'muted'], true);
+  case STATUS_UNMUTE_SUCCESS:
+    return state.setIn([action.id, 'muted'], false);
+  case TIMELINE_REFRESH_SUCCESS:
+  case TIMELINE_EXPAND_SUCCESS:
+  case CONTEXT_FETCH_SUCCESS:
+  case NOTIFICATIONS_REFRESH_SUCCESS:
+  case NOTIFICATIONS_EXPAND_SUCCESS:
+  case FAVOURITED_STATUSES_FETCH_SUCCESS:
+  case FAVOURITED_STATUSES_EXPAND_SUCCESS:
+  case PINNED_STATUSES_FETCH_SUCCESS:
+  case SEARCH_FETCH_SUCCESS:
+    return normalizeStatuses(state, action.statuses);
+  case TIMELINE_DELETE:
+    return deleteStatus(state, action.id, action.references);
+  case ACCOUNT_BLOCK_SUCCESS:
+  case ACCOUNT_MUTE_SUCCESS:
+    return filterStatuses(state, action.relationship);
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/timelines.js b/app/javascript/mastodon/reducers/timelines.js
new file mode 100644
index 00000000000..bee4c4ef92c
--- /dev/null
+++ b/app/javascript/mastodon/reducers/timelines.js
@@ -0,0 +1,149 @@
+import {
+  TIMELINE_REFRESH_REQUEST,
+  TIMELINE_REFRESH_SUCCESS,
+  TIMELINE_REFRESH_FAIL,
+  TIMELINE_UPDATE,
+  TIMELINE_DELETE,
+  TIMELINE_EXPAND_SUCCESS,
+  TIMELINE_EXPAND_REQUEST,
+  TIMELINE_EXPAND_FAIL,
+  TIMELINE_SCROLL_TOP,
+  TIMELINE_CONNECT,
+  TIMELINE_DISCONNECT,
+} from '../actions/timelines';
+import {
+  ACCOUNT_BLOCK_SUCCESS,
+  ACCOUNT_MUTE_SUCCESS,
+  ACCOUNT_UNFOLLOW_SUCCESS,
+} from '../actions/accounts';
+import { Map as ImmutableMap, List as ImmutableList, fromJS } from 'immutable';
+
+const initialState = ImmutableMap();
+
+const initialTimeline = ImmutableMap({
+  unread: 0,
+  online: false,
+  top: true,
+  loaded: false,
+  isLoading: false,
+  next: false,
+  items: ImmutableList(),
+});
+
+const normalizeTimeline = (state, timeline, statuses, next) => {
+  const oldIds    = state.getIn([timeline, 'items'], ImmutableList());
+  const ids       = ImmutableList(statuses.map(status => status.get('id'))).filter(newId => !oldIds.includes(newId));
+  const wasLoaded = state.getIn([timeline, 'loaded']);
+  const hadNext   = state.getIn([timeline, 'next']);
+
+  return state.update(timeline, initialTimeline, map => map.withMutations(mMap => {
+    mMap.set('loaded', true);
+    mMap.set('isLoading', false);
+    if (!hadNext) mMap.set('next', next);
+    mMap.set('items', wasLoaded ? ids.concat(oldIds) : ids);
+  }));
+};
+
+const appendNormalizedTimeline = (state, timeline, statuses, next) => {
+  const oldIds = state.getIn([timeline, 'items'], ImmutableList());
+  const ids    = ImmutableList(statuses.map(status => status.get('id'))).filter(newId => !oldIds.includes(newId));
+
+  return state.update(timeline, initialTimeline, map => map.withMutations(mMap => {
+    mMap.set('isLoading', false);
+    mMap.set('next', next);
+    mMap.set('items', oldIds.concat(ids));
+  }));
+};
+
+const updateTimeline = (state, timeline, status, references) => {
+  const top        = state.getIn([timeline, 'top']);
+  const ids        = state.getIn([timeline, 'items'], ImmutableList());
+  const includesId = ids.includes(status.get('id'));
+  const unread     = state.getIn([timeline, 'unread'], 0);
+
+  if (includesId) {
+    return state;
+  }
+
+  let newIds = ids;
+
+  return state.update(timeline, initialTimeline, map => map.withMutations(mMap => {
+    if (!top) mMap.set('unread', unread + 1);
+    if (top && ids.size > 40) newIds = newIds.take(20);
+    if (status.getIn(['reblog', 'id'], null) !== null) newIds = newIds.filterNot(item => references.includes(item));
+    mMap.set('items', newIds.unshift(status.get('id')));
+  }));
+};
+
+const deleteStatus = (state, id, accountId, references) => {
+  state.keySeq().forEach(timeline => {
+    state = state.updateIn([timeline, 'items'], list => list.filterNot(item => item === id));
+  });
+
+  // Remove reblogs of deleted status
+  references.forEach(ref => {
+    state = deleteStatus(state, ref[0], ref[1], []);
+  });
+
+  return state;
+};
+
+const filterTimelines = (state, relationship, statuses) => {
+  let references;
+
+  statuses.forEach(status => {
+    if (status.get('account') !== relationship.id) {
+      return;
+    }
+
+    references = statuses.filter(item => item.get('reblog') === status.get('id')).map(item => [item.get('id'), item.get('account')]);
+    state      = deleteStatus(state, status.get('id'), status.get('account'), references);
+  });
+
+  return state;
+};
+
+const filterTimeline = (timeline, state, relationship, statuses) =>
+  state.updateIn([timeline, 'items'], ImmutableList(), list =>
+    list.filterNot(statusId =>
+      statuses.getIn([statusId, 'account']) === relationship.id
+    ));
+
+const updateTop = (state, timeline, top) => {
+  return state.update(timeline, initialTimeline, map => map.withMutations(mMap => {
+    if (top) mMap.set('unread', 0);
+    mMap.set('top', top);
+  }));
+};
+
+export default function timelines(state = initialState, action) {
+  switch(action.type) {
+  case TIMELINE_REFRESH_REQUEST:
+  case TIMELINE_EXPAND_REQUEST:
+    return state.update(action.timeline, initialTimeline, map => map.set('isLoading', true));
+  case TIMELINE_REFRESH_FAIL:
+  case TIMELINE_EXPAND_FAIL:
+    return state.update(action.timeline, initialTimeline, map => map.set('isLoading', false));
+  case TIMELINE_REFRESH_SUCCESS:
+    return normalizeTimeline(state, action.timeline, fromJS(action.statuses), action.next);
+  case TIMELINE_EXPAND_SUCCESS:
+    return appendNormalizedTimeline(state, action.timeline, fromJS(action.statuses), action.next);
+  case TIMELINE_UPDATE:
+    return updateTimeline(state, action.timeline, fromJS(action.status), action.references);
+  case TIMELINE_DELETE:
+    return deleteStatus(state, action.id, action.accountId, action.references, action.reblogOf);
+  case ACCOUNT_BLOCK_SUCCESS:
+  case ACCOUNT_MUTE_SUCCESS:
+    return filterTimelines(state, action.relationship, action.statuses);
+  case ACCOUNT_UNFOLLOW_SUCCESS:
+    return filterTimeline('home', state, action.relationship, action.statuses);
+  case TIMELINE_SCROLL_TOP:
+    return updateTop(state, action.timeline, action.top);
+  case TIMELINE_CONNECT:
+    return state.update(action.timeline, initialTimeline, map => map.set('online', true));
+  case TIMELINE_DISCONNECT:
+    return state.update(action.timeline, initialTimeline, map => map.set('online', false));
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/reducers/user_lists.js b/app/javascript/mastodon/reducers/user_lists.js
new file mode 100644
index 00000000000..8db18c5dc66
--- /dev/null
+++ b/app/javascript/mastodon/reducers/user_lists.js
@@ -0,0 +1,80 @@
+import {
+  FOLLOWERS_FETCH_SUCCESS,
+  FOLLOWERS_EXPAND_SUCCESS,
+  FOLLOWING_FETCH_SUCCESS,
+  FOLLOWING_EXPAND_SUCCESS,
+  FOLLOW_REQUESTS_FETCH_SUCCESS,
+  FOLLOW_REQUESTS_EXPAND_SUCCESS,
+  FOLLOW_REQUEST_AUTHORIZE_SUCCESS,
+  FOLLOW_REQUEST_REJECT_SUCCESS,
+} from '../actions/accounts';
+import {
+  REBLOGS_FETCH_SUCCESS,
+  FAVOURITES_FETCH_SUCCESS,
+} from '../actions/interactions';
+import {
+  BLOCKS_FETCH_SUCCESS,
+  BLOCKS_EXPAND_SUCCESS,
+} from '../actions/blocks';
+import {
+  MUTES_FETCH_SUCCESS,
+  MUTES_EXPAND_SUCCESS,
+} from '../actions/mutes';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
+
+const initialState = ImmutableMap({
+  followers: ImmutableMap(),
+  following: ImmutableMap(),
+  reblogged_by: ImmutableMap(),
+  favourited_by: ImmutableMap(),
+  follow_requests: ImmutableMap(),
+  blocks: ImmutableMap(),
+  mutes: ImmutableMap(),
+});
+
+const normalizeList = (state, type, id, accounts, next) => {
+  return state.setIn([type, id], ImmutableMap({
+    next,
+    items: ImmutableList(accounts.map(item => item.id)),
+  }));
+};
+
+const appendToList = (state, type, id, accounts, next) => {
+  return state.updateIn([type, id], map => {
+    return map.set('next', next).update('items', list => list.concat(accounts.map(item => item.id)));
+  });
+};
+
+export default function userLists(state = initialState, action) {
+  switch(action.type) {
+  case FOLLOWERS_FETCH_SUCCESS:
+    return normalizeList(state, 'followers', action.id, action.accounts, action.next);
+  case FOLLOWERS_EXPAND_SUCCESS:
+    return appendToList(state, 'followers', action.id, action.accounts, action.next);
+  case FOLLOWING_FETCH_SUCCESS:
+    return normalizeList(state, 'following', action.id, action.accounts, action.next);
+  case FOLLOWING_EXPAND_SUCCESS:
+    return appendToList(state, 'following', action.id, action.accounts, action.next);
+  case REBLOGS_FETCH_SUCCESS:
+    return state.setIn(['reblogged_by', action.id], ImmutableList(action.accounts.map(item => item.id)));
+  case FAVOURITES_FETCH_SUCCESS:
+    return state.setIn(['favourited_by', action.id], ImmutableList(action.accounts.map(item => item.id)));
+  case FOLLOW_REQUESTS_FETCH_SUCCESS:
+    return state.setIn(['follow_requests', 'items'], ImmutableList(action.accounts.map(item => item.id))).setIn(['follow_requests', 'next'], action.next);
+  case FOLLOW_REQUESTS_EXPAND_SUCCESS:
+    return state.updateIn(['follow_requests', 'items'], list => list.concat(action.accounts.map(item => item.id))).setIn(['follow_requests', 'next'], action.next);
+  case FOLLOW_REQUEST_AUTHORIZE_SUCCESS:
+  case FOLLOW_REQUEST_REJECT_SUCCESS:
+    return state.updateIn(['follow_requests', 'items'], list => list.filterNot(item => item === action.id));
+  case BLOCKS_FETCH_SUCCESS:
+    return state.setIn(['blocks', 'items'], ImmutableList(action.accounts.map(item => item.id))).setIn(['blocks', 'next'], action.next);
+  case BLOCKS_EXPAND_SUCCESS:
+    return state.updateIn(['blocks', 'items'], list => list.concat(action.accounts.map(item => item.id))).setIn(['blocks', 'next'], action.next);
+  case MUTES_FETCH_SUCCESS:
+    return state.setIn(['mutes', 'items'], ImmutableList(action.accounts.map(item => item.id))).setIn(['mutes', 'next'], action.next);
+  case MUTES_EXPAND_SUCCESS:
+    return state.updateIn(['mutes', 'items'], list => list.concat(action.accounts.map(item => item.id))).setIn(['mutes', 'next'], action.next);
+  default:
+    return state;
+  }
+};
diff --git a/app/javascript/mastodon/rtl.js b/app/javascript/mastodon/rtl.js
new file mode 100644
index 00000000000..00870a15d67
--- /dev/null
+++ b/app/javascript/mastodon/rtl.js
@@ -0,0 +1,31 @@
+// U+0590  to U+05FF  - Hebrew
+// U+0600  to U+06FF  - Arabic
+// U+0700  to U+074F  - Syriac
+// U+0750  to U+077F  - Arabic Supplement
+// U+0780  to U+07BF  - Thaana
+// U+07C0  to U+07FF  - N'Ko
+// U+0800  to U+083F  - Samaritan
+// U+08A0  to U+08FF  - Arabic Extended-A
+// U+FB1D  to U+FB4F  - Hebrew presentation forms
+// U+FB50  to U+FDFF  - Arabic presentation forms A
+// U+FE70  to U+FEFF  - Arabic presentation forms B
+
+const rtlChars = /[\u0590-\u083F]|[\u08A0-\u08FF]|[\uFB1D-\uFDFF]|[\uFE70-\uFEFF]/mg;
+
+export function isRtl(text) {
+  if (text.length === 0) {
+    return false;
+  }
+
+  text = text.replace(/(?:^|[^\/\w])@([a-z0-9_]+(@[a-z0-9\.\-]+)?)/ig, '');
+  text = text.replace(/(?:^|[^\/\w])#([\S]+)/ig, '');
+  text = text.replace(/\s+/g, '');
+
+  const matches = text.match(rtlChars);
+
+  if (!matches) {
+    return false;
+  }
+
+  return matches.length / text.length > 0.3;
+};
diff --git a/app/javascript/mastodon/scroll.js b/app/javascript/mastodon/scroll.js
new file mode 100644
index 00000000000..2af07e0fb1f
--- /dev/null
+++ b/app/javascript/mastodon/scroll.js
@@ -0,0 +1,30 @@
+const easingOutQuint = (x, t, b, c, d) => c * ((t = t / d - 1) * t * t * t * t + 1) + b;
+
+const scroll = (node, key, target) => {
+  const startTime = Date.now();
+  const offset    = node[key];
+  const gap       = target - offset;
+  const duration  = 1000;
+  let interrupt   = false;
+
+  const step = () => {
+    const elapsed    = Date.now() - startTime;
+    const percentage = elapsed / duration;
+
+    if (percentage > 1 || interrupt) {
+      return;
+    }
+
+    node[key] = easingOutQuint(0, elapsed, offset, gap, duration);
+    requestAnimationFrame(step);
+  };
+
+  step();
+
+  return () => {
+    interrupt = true;
+  };
+};
+
+export const scrollRight = (node, position) => scroll(node, 'scrollLeft', position);
+export const scrollTop = (node) => scroll(node, 'scrollTop', 0);
diff --git a/app/javascript/mastodon/selectors/index.js b/app/javascript/mastodon/selectors/index.js
new file mode 100644
index 00000000000..d26d1b727f6
--- /dev/null
+++ b/app/javascript/mastodon/selectors/index.js
@@ -0,0 +1,87 @@
+import { createSelector } from 'reselect';
+import { List as ImmutableList } from 'immutable';
+
+const getAccountBase         = (state, id) => state.getIn(['accounts', id], null);
+const getAccountCounters     = (state, id) => state.getIn(['accounts_counters', id], null);
+const getAccountRelationship = (state, id) => state.getIn(['relationships', id], null);
+
+export const makeGetAccount = () => {
+  return createSelector([getAccountBase, getAccountCounters, getAccountRelationship], (base, counters, relationship) => {
+    if (base === null) {
+      return null;
+    }
+
+    return base.merge(counters).set('relationship', relationship);
+  });
+};
+
+export const makeGetStatus = () => {
+  return createSelector(
+    [
+      (state, id) => state.getIn(['statuses', id]),
+      (state, id) => state.getIn(['statuses', state.getIn(['statuses', id, 'reblog'])]),
+      (state, id) => state.getIn(['accounts', state.getIn(['statuses', id, 'account'])]),
+      (state, id) => state.getIn(['accounts', state.getIn(['statuses', state.getIn(['statuses', id, 'reblog']), 'account'])]),
+    ],
+
+    (statusBase, statusReblog, accountBase, accountReblog) => {
+      if (!statusBase) {
+        return null;
+      }
+
+      if (statusReblog) {
+        statusReblog = statusReblog.set('account', accountReblog);
+      } else {
+        statusReblog = null;
+      }
+
+      return statusBase.withMutations(map => {
+        map.set('reblog', statusReblog);
+        map.set('account', accountBase);
+      });
+    }
+  );
+};
+
+const getAlertsBase = state => state.get('alerts');
+
+export const getAlerts = createSelector([getAlertsBase], (base) => {
+  let arr = [];
+
+  base.forEach(item => {
+    arr.push({
+      message: item.get('message'),
+      title: item.get('title'),
+      key: item.get('key'),
+      dismissAfter: 5000,
+      barStyle: {
+        zIndex: 200,
+      },
+    });
+  });
+
+  return arr;
+});
+
+export const makeGetNotification = () => {
+  return createSelector([
+    (_, base)             => base,
+    (state, _, accountId) => state.getIn(['accounts', accountId]),
+  ], (base, account) => {
+    return base.set('account', account);
+  });
+};
+
+export const getAccountGallery = createSelector([
+  (state, id) => state.getIn(['timelines', `account:${id}:media`, 'items'], ImmutableList()),
+  state       => state.get('statuses'),
+], (statusIds, statuses) => {
+  let medias = ImmutableList();
+
+  statusIds.forEach(statusId => {
+    const status = statuses.get(statusId);
+    medias = medias.concat(status.get('media_attachments').map(media => media.set('status', status)));
+  });
+
+  return medias;
+});
diff --git a/app/javascript/mastodon/service_worker/entry.js b/app/javascript/mastodon/service_worker/entry.js
new file mode 100644
index 00000000000..eea4cfc3c2f
--- /dev/null
+++ b/app/javascript/mastodon/service_worker/entry.js
@@ -0,0 +1,10 @@
+import './web_push_notifications';
+
+// Cause a new version of a registered Service Worker to replace an existing one
+// that is already installed, and replace the currently active worker on open pages.
+self.addEventListener('install', function(event) {
+  event.waitUntil(self.skipWaiting());
+});
+self.addEventListener('activate', function(event) {
+  event.waitUntil(self.clients.claim());
+});
diff --git a/app/javascript/mastodon/service_worker/web_push_notifications.js b/app/javascript/mastodon/service_worker/web_push_notifications.js
new file mode 100644
index 00000000000..f63cff335a1
--- /dev/null
+++ b/app/javascript/mastodon/service_worker/web_push_notifications.js
@@ -0,0 +1,159 @@
+const MAX_NOTIFICATIONS = 5;
+const GROUP_TAG = 'tag';
+
+// Avoid loading intl-messageformat and dealing with locales in the ServiceWorker
+const formatGroupTitle = (message, count) => message.replace('%{count}', count);
+
+const notify = options =>
+  self.registration.getNotifications().then(notifications => {
+    if (notifications.length === MAX_NOTIFICATIONS) {
+      // Reached the maximum number of notifications, proceed with grouping
+      const group = {
+        title: formatGroupTitle(options.data.message, notifications.length + 1),
+        body: notifications
+          .sort((n1, n2) => n1.timestamp < n2.timestamp)
+          .map(notification => notification.title).join('\n'),
+        badge: '/badge.png',
+        icon: '/android-chrome-192x192.png',
+        tag: GROUP_TAG,
+        data: {
+          url: (new URL('/web/notifications', self.location)).href,
+          count: notifications.length + 1,
+          message: options.data.message,
+        },
+      };
+
+      notifications.forEach(notification => notification.close());
+
+      return self.registration.showNotification(group.title, group);
+    } else if (notifications.length === 1 && notifications[0].tag === GROUP_TAG) {
+      // Already grouped, proceed with appending the notification to the group
+      const group = cloneNotification(notifications[0]);
+
+      group.title = formatGroupTitle(group.data.message, group.data.count + 1);
+      group.body  = `${options.title}\n${group.body}`;
+      group.data  = { ...group.data, count: group.data.count + 1 };
+
+      return self.registration.showNotification(group.title, group);
+    }
+
+    return self.registration.showNotification(options.title, options);
+  });
+
+const handlePush = (event) => {
+  const options = event.data.json();
+
+  options.body      = options.data.nsfw || options.data.content;
+  options.dir       = options.data.dir;
+  options.image     = options.image || undefined; // Null results in a network request (404)
+  options.timestamp = options.timestamp && new Date(options.timestamp);
+
+  const expandAction = options.data.actions.find(action => action.todo === 'expand');
+
+  if (expandAction) {
+    options.actions          = [expandAction];
+    options.hiddenActions    = options.data.actions.filter(action => action !== expandAction);
+    options.data.hiddenImage = options.image;
+    options.image            = undefined;
+  } else {
+    options.actions = options.data.actions;
+  }
+
+  event.waitUntil(notify(options));
+};
+
+const cloneNotification = (notification) => {
+  const clone = {  };
+
+  for(var k in notification) {
+    clone[k] = notification[k];
+  }
+
+  return clone;
+};
+
+const expandNotification = (notification) => {
+  const nextNotification = cloneNotification(notification);
+
+  nextNotification.body    = notification.data.content;
+  nextNotification.image   = notification.data.hiddenImage;
+  nextNotification.actions = notification.data.actions.filter(action => action.todo !== 'expand');
+
+  return self.registration.showNotification(nextNotification.title, nextNotification);
+};
+
+const makeRequest = (notification, action) =>
+  fetch(action.action, {
+    headers: {
+      'Authorization': `Bearer ${notification.data.access_token}`,
+      'Content-Type': 'application/json',
+    },
+    method: action.method,
+    credentials: 'include',
+  });
+
+const findBestClient = clients => {
+  const focusedClient = clients.find(client => client.focused);
+  const visibleClient = clients.find(client => client.visibilityState === 'visible');
+
+  return focusedClient || visibleClient || clients[0];
+};
+
+const openUrl = url =>
+  self.clients.matchAll({ type: 'window' }).then(clientList => {
+    if (clientList.length !== 0) {
+      const webClients = clientList.filter(client => /\/web\//.test(client.url));
+
+      if (webClients.length !== 0) {
+        const client       = findBestClient(webClients);
+        const { pathname } = new URL(url);
+
+        if (pathname.startsWith('/web/')) {
+          return client.focus().then(client => client.postMessage({
+            type: 'navigate',
+            path: pathname.slice('/web/'.length - 1),
+          }));
+        }
+      } else if ('navigate' in clientList[0]) { // Chrome 42-48 does not support navigate
+        const client = findBestClient(clientList);
+
+        return client.navigate(url).then(client => client.focus());
+      }
+    }
+
+    return self.clients.openWindow(url);
+  });
+
+const removeActionFromNotification = (notification, action) => {
+  const actions          = notification.actions.filter(act => act.action !== action.action);
+  const nextNotification = cloneNotification(notification);
+
+  nextNotification.actions = actions;
+
+  return self.registration.showNotification(nextNotification.title, nextNotification);
+};
+
+const handleNotificationClick = (event) => {
+  const reactToNotificationClick = new Promise((resolve, reject) => {
+    if (event.action) {
+      const action = event.notification.data.actions.find(({ action }) => action === event.action);
+
+      if (action.todo === 'expand') {
+        resolve(expandNotification(event.notification));
+      } else if (action.todo === 'request') {
+        resolve(makeRequest(event.notification, action)
+          .then(() => removeActionFromNotification(event.notification, action)));
+      } else {
+        reject(`Unknown action: ${action.todo}`);
+      }
+    } else {
+      event.notification.close();
+      resolve(openUrl(event.notification.data.url));
+    }
+  });
+
+  event.waitUntil(reactToNotificationClick);
+};
+
+self.addEventListener('push', handlePush);
+self.addEventListener('notificationclick', handleNotificationClick);
diff --git a/app/javascript/mastodon/store/configureStore.js b/app/javascript/mastodon/store/configureStore.js
new file mode 100644
index 00000000000..1376d4cbaf5
--- /dev/null
+++ b/app/javascript/mastodon/store/configureStore.js
@@ -0,0 +1,15 @@
+import { createStore, applyMiddleware, compose } from 'redux';
+import thunk from 'redux-thunk';
+import appReducer from '../reducers';
+import loadingBarMiddleware from '../middleware/loading_bar';
+import errorsMiddleware from '../middleware/errors';
+import soundsMiddleware from '../middleware/sounds';
+
+export default function configureStore() {
+  return createStore(appReducer, compose(applyMiddleware(
+    thunk,
+    loadingBarMiddleware({ promiseTypeSuffixes: ['REQUEST', 'SUCCESS', 'FAIL'] }),
+    errorsMiddleware(),
+    soundsMiddleware()
+  ), window.devToolsExtension ? window.devToolsExtension() : f => f));
+};
diff --git a/app/javascript/mastodon/stream.js b/app/javascript/mastodon/stream.js
new file mode 100644
index 00000000000..36c68ffc5be
--- /dev/null
+++ b/app/javascript/mastodon/stream.js
@@ -0,0 +1,73 @@
+import WebSocketClient from 'websocket.js';
+
+export function connectStream(path, pollingRefresh = null, callbacks = () => ({ onConnect() {}, onDisconnect() {}, onReceive() {} })) {
+  return (dispatch, getState) => {
+    const streamingAPIBaseURL = getState().getIn(['meta', 'streaming_api_base_url']);
+    const accessToken = getState().getIn(['meta', 'access_token']);
+    const { onConnect, onDisconnect, onReceive } = callbacks(dispatch, getState);
+    let polling = null;
+
+    const setupPolling = () => {
+      polling = setInterval(() => {
+        pollingRefresh(dispatch);
+      }, 20000);
+    };
+
+    const clearPolling = () => {
+      if (polling) {
+        clearInterval(polling);
+        polling = null;
+      }
+    };
+
+    const subscription = getStream(streamingAPIBaseURL, accessToken, path, {
+      connected () {
+        if (pollingRefresh) {
+          clearPolling();
+        }
+        onConnect();
+      },
+
+      disconnected () {
+        if (pollingRefresh) {
+          setupPolling();
+        }
+        onDisconnect();
+      },
+
+      received (data) {
+        onReceive(data);
+      },
+
+      reconnected () {
+        if (pollingRefresh) {
+          clearPolling();
+          pollingRefresh(dispatch);
+        }
+        onConnect();
+      },
+
+    });
+
+    const disconnect = () => {
+      if (subscription) {
+        subscription.close();
+      }
+      clearPolling();
+    };
+
+    return disconnect;
+  };
+}
+
+
+export default function getStream(streamingAPIBaseURL, accessToken, stream, { connected, received, disconnected, reconnected }) {
+  const ws = new WebSocketClient(`${streamingAPIBaseURL}/api/v1/streaming/?access_token=${accessToken}&stream=${stream}`);
+
+  ws.onopen      = connected;
+  ws.onmessage   = e => received(JSON.parse(e.data));
+  ws.onclose     = disconnected;
+  ws.onreconnect = reconnected;
+
+  return ws;
+};
diff --git a/app/javascript/mastodon/test_setup.js b/app/javascript/mastodon/test_setup.js
new file mode 100644
index 00000000000..80148379b27
--- /dev/null
+++ b/app/javascript/mastodon/test_setup.js
@@ -0,0 +1,5 @@
+import { configure } from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+
+const adapter = new Adapter();
+configure({ adapter });
diff --git a/app/javascript/mastodon/uuid.js b/app/javascript/mastodon/uuid.js
new file mode 100644
index 00000000000..be18993057b
--- /dev/null
+++ b/app/javascript/mastodon/uuid.js
@@ -0,0 +1,3 @@
+export default function uuid(a) {
+  return a ? (a^Math.random() * 16 >> a / 4).toString(16) : ([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g, uuid);
+};
diff --git a/app/javascript/mastodon/web_push_subscription.js b/app/javascript/mastodon/web_push_subscription.js
new file mode 100644
index 00000000000..3dbed09ea28
--- /dev/null
+++ b/app/javascript/mastodon/web_push_subscription.js
@@ -0,0 +1,105 @@
+import axios from 'axios';
+import { store } from './containers/mastodon';
+import { setBrowserSupport, setSubscription, clearSubscription } from './actions/push_notifications';
+
+// Taken from https://www.npmjs.com/package/web-push
+const urlBase64ToUint8Array = (base64String) => {
+  const padding = '='.repeat((4 - base64String.length % 4) % 4);
+  const base64 = (base64String + padding)
+    .replace(/\-/g, '+')
+    .replace(/_/g, '/');
+
+  const rawData = window.atob(base64);
+  const outputArray = new Uint8Array(rawData.length);
+
+  for (let i = 0; i < rawData.length; ++i) {
+    outputArray[i] = rawData.charCodeAt(i);
+  }
+  return outputArray;
+};
+
+const getApplicationServerKey = () => document.querySelector('[name="applicationServerKey"]').getAttribute('content');
+
+const getRegistration = () => navigator.serviceWorker.ready;
+
+const getPushSubscription = (registration) =>
+  registration.pushManager.getSubscription()
+    .then(subscription => ({ registration, subscription }));
+
+const subscribe = (registration) =>
+  registration.pushManager.subscribe({
+    userVisibleOnly: true,
+    applicationServerKey: urlBase64ToUint8Array(getApplicationServerKey()),
+  });
+
+const unsubscribe = ({ registration, subscription }) =>
+  subscription ? subscription.unsubscribe().then(() => registration) : registration;
+
+const sendSubscriptionToBackend = (subscription) =>
+  axios.post('/api/web/push_subscriptions', {
+    subscription,
+  }).then(response => response.data);
+
+// Last one checks for payload support: https://web-push-book.gauntface.com/chapter-06/01-non-standards-browsers/#no-payload
+const supportsPushNotifications = ('serviceWorker' in navigator && 'PushManager' in window && 'getKey' in PushSubscription.prototype);
+
+export function register () {
+  store.dispatch(setBrowserSupport(supportsPushNotifications));
+
+  if (supportsPushNotifications) {
+    if (!getApplicationServerKey()) {
+      console.error('The VAPID public key is not set. You will not be able to receive Web Push Notifications.');
+      return;
+    }
+
+    getRegistration()
+      .then(getPushSubscription)
+      .then(({ registration, subscription }) => {
+        if (subscription !== null) {
+          // We have a subscription, check if it is still valid
+          const currentServerKey = (new Uint8Array(subscription.options.applicationServerKey)).toString();
+          const subscriptionServerKey = urlBase64ToUint8Array(getApplicationServerKey()).toString();
+          const serverEndpoint = store.getState().getIn(['push_notifications', 'subscription', 'endpoint']);
+
+          // If the VAPID public key did not change and the endpoint corresponds
+          // to the endpoint saved in the backend, the subscription is valid
+          if (subscriptionServerKey === currentServerKey && subscription.endpoint === serverEndpoint) {
+            return subscription;
+          } else {
+            // Something went wrong, try to subscribe again
+            return unsubscribe({ registration, subscription }).then(subscribe).then(sendSubscriptionToBackend);
+          }
+        }
+
+        // No subscription, try to subscribe
+        return subscribe(registration).then(sendSubscriptionToBackend);
+      })
+      .then(subscription => {
+        // If we got a PushSubscription (and not a subscription object from the backend)
+        // it means that the backend subscription is valid (and was set during hydration)
+        if (!(subscription instanceof PushSubscription)) {
+          store.dispatch(setSubscription(subscription));
+        }
+      })
+      .catch(error => {
+        if (error.code === 20 && error.name === 'AbortError') {
+          console.warn('Your browser supports Web Push Notifications, but does not seem to implement the VAPID protocol.');
+        } else if (error.code === 5 && error.name === 'InvalidCharacterError') {
+          console.error('The VAPID public key seems to be invalid:', getApplicationServerKey());
+        }
+
+        // Clear alerts and hide UI settings
+        store.dispatch(clearSubscription());
+
+        try {
+          getRegistration()
+            .then(getPushSubscription)
+            .then(unsubscribe);
+        } catch (e) {
+
+        }
+      });
+  } else {
+    console.warn('Your browser does not support Web Push Notifications.');
+  }
+}
diff --git a/app/javascript/styles/application.scss b/app/javascript/styles/application.scss
new file mode 100644
index 00000000000..44aa105645a
--- /dev/null
+++ b/app/javascript/styles/application.scss
@@ -0,0 +1,22 @@
+@import 'mastodon/mixins';
+@import 'mastodon/variables';
+@import 'fonts/roboto';
+@import 'fonts/roboto-mono';
+@import 'fonts/montserrat';
+
+@import 'mastodon/reset';
+@import 'mastodon/basics';
+@import 'mastodon/containers';
+@import 'mastodon/lists';
+@import 'mastodon/footer';
+@import 'mastodon/compact_header';
+@import 'mastodon/landing_strip';
+@import 'mastodon/forms';
+@import 'mastodon/accounts';
+@import 'mastodon/stream_entries';
+@import 'mastodon/components';
+@import 'mastodon/emoji_picker';
+@import 'mastodon/about';
+@import 'mastodon/tables';
+@import 'mastodon/admin';
+@import 'mastodon/rtl';
diff --git a/app/javascript/styles/mastodon/_mixins.scss b/app/javascript/styles/mastodon/_mixins.scss
new file mode 100644
index 00000000000..67d768a6c6e
--- /dev/null
+++ b/app/javascript/styles/mastodon/_mixins.scss
@@ -0,0 +1,12 @@
+@mixin avatar-radius() {
+  border-radius: 4px;
+  background: transparent no-repeat;
+  background-position: 50%;
+  background-clip: padding-box;
+}
+
+@mixin avatar-size($size:48px) {
+  width: $size;
+  height: $size;
+  background-size: $size $size;
+}
diff --git a/app/javascript/styles/mastodon/about.scss b/app/javascript/styles/mastodon/about.scss
new file mode 100644
index 00000000000..358d86eecc6
--- /dev/null
+++ b/app/javascript/styles/mastodon/about.scss
@@ -0,0 +1,824 @@
+.landing-page {
+  p,
+  li {
+    font-family: 'mastodon-font-sans-serif', sans-serif;
+    font-size: 16px;
+    font-weight: 400;
+    font-size: 16px;
+    line-height: 30px;
+    margin-bottom: 12px;
+    color: $ui-primary-color;
+
+    a {
+      color: $ui-highlight-color;
+      text-decoration: underline;
+    }
+  }
+
+  em {
+    display: inline;
+    margin: 0;
+    padding: 0;
+    font-weight: 500;
+    background: transparent;
+    font-family: inherit;
+    font-size: inherit;
+    line-height: inherit;
+    color: lighten($ui-primary-color, 10%);
+  }
+
+  h1 {
+    font-family: 'mastodon-font-display', sans-serif;
+    font-size: 26px;
+    line-height: 30px;
+    font-weight: 500;
+    margin-bottom: 20px;
+    color: $ui-secondary-color;
+
+    small {
+      font-family: 'mastodon-font-sans-serif', sans-serif;
+      display: block;
+      font-size: 18px;
+      font-weight: 400;
+      color: $ui-base-lighter-color;
+    }
+  }
+
+  h2 {
+    font-family: 'mastodon-font-display', sans-serif;
+    font-size: 22px;
+    line-height: 26px;
+    font-weight: 500;
+    margin-bottom: 20px;
+    color: $ui-secondary-color;
+  }
+
+  h3 {
+    font-family: 'mastodon-font-display', sans-serif;
+    font-size: 18px;
+    line-height: 24px;
+    font-weight: 500;
+    margin-bottom: 20px;
+    color: $ui-secondary-color;
+  }
+
+  h4 {
+    font-family: 'mastodon-font-display', sans-serif;
+    font-size: 16px;
+    line-height: 24px;
+    font-weight: 500;
+    margin-bottom: 20px;
+    color: $ui-secondary-color;
+  }
+
+  h5 {
+    font-family: 'mastodon-font-display', sans-serif;
+    font-size: 14px;
+    line-height: 24px;
+    font-weight: 500;
+    margin-bottom: 20px;
+    color: $ui-secondary-color;
+  }
+
+  h6 {
+    font-family: 'mastodon-font-display', sans-serif;
+    font-size: 12px;
+    line-height: 24px;
+    font-weight: 500;
+    margin-bottom: 20px;
+    color: $ui-secondary-color;
+  }
+
+  ul,
+  ol {
+    margin-left: 20px;
+
+    &[type='a'] {
+      list-style-type: lower-alpha;
+    }
+
+    &[type='i'] {
+      list-style-type: lower-roman;
+    }
+  }
+
+  ul {
+    list-style: disc;
+  }
+
+  ol {
+    list-style: decimal;
+  }
+
+  li > ol,
+  li > ul {
+    margin-top: 6px;
+  }
+
+  hr {
+    border-color: rgba($ui-base-lighter-color, .6);
+  }
+
+  .container {
+    width: 100%;
+    box-sizing: border-box;
+    max-width: 800px;
+    margin: 0 auto;
+    word-wrap: break-word;
+  }
+
+  .header-wrapper {
+    padding-top: 15px;
+    background: $ui-base-color;
+    background: linear-gradient(150deg, lighten($ui-base-color, 8%), $ui-base-color);
+    position: relative;
+
+    &.compact {
+      background: $ui-base-color;
+      padding-bottom: 15px;
+
+      .hero .heading {
+        padding-bottom: 20px;
+        font-family: 'mastodon-font-sans-serif', sans-serif;
+        font-size: 16px;
+        font-weight: 400;
+        font-size: 16px;
+        line-height: 30px;
+        color: $ui-primary-color;
+
+        a {
+          color: $ui-highlight-color;
+          text-decoration: underline;
+        }
+      }
+    }
+
+    .mascot-container {
+      max-width: 800px;
+      margin: 0 auto;
+      position: absolute;
+      top: 0;
+      left: 0;
+      right: 0;
+      height: 100%;
+    }
+
+    .mascot {
+      position: absolute;
+      bottom: -14px;
+      width: auto;
+      height: auto;
+      left: 60px;
+      z-index: 3;
+    }
+  }
+
+  .header {
+    line-height: 30px;
+    overflow: hidden;
+
+    .container {
+      display: flex;
+      justify-content: space-between;
+    }
+
+    .links {
+      position: relative;
+      z-index: 4;
+
+      a {
+        display: flex;
+        justify-content: center;
+        align-items: center;
+        color: $ui-primary-color;
+        text-decoration: none;
+        padding: 12px 16px;
+        line-height: 32px;
+        font-family: 'mastodon-font-display', sans-serif;
+        font-weight: 500;
+        font-size: 14px;
+
+        &:hover {
+          color: $ui-secondary-color;
+        }
+      }
+
+      .brand {
+        a {
+          padding-left: 0;
+          padding-right: 0;
+          color: $white;
+        }
+
+        img {
+          height: 32px;
+          position: relative;
+          top: 4px;
+          left: -10px;
+        }
+      }
+
+      ul {
+        list-style: none;
+        margin: 0;
+
+        li {
+          display: inline-block;
+          vertical-align: bottom;
+          margin: 0;
+
+          &:first-child a {
+            padding-left: 0;
+          }
+
+          &:last-child a {
+            padding-right: 0;
+          }
+        }
+      }
+    }
+
+    .hero {
+      margin-top: 50px;
+      align-items: center;
+      position: relative;
+
+      .floats {
+        position: absolute;
+        width: 100%;
+        height: 100%;
+        top: 0;
+        left: 0;
+
+        div {
+          position: absolute;
+          transition: all 0.1s linear;
+          animation-name: floating;
+          animation-iteration-count: infinite;
+          animation-direction: alternate;
+          animation-timing-function: ease-in-out;
+          z-index: 2;
+        }
+
+        .float-1 {
+          width: 324px;
+          height: 170px;
+          right: -120px;
+          bottom: 0;
+          animation-duration: 3s;
+          background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 447.1875 234.375" height="170" width="324"><path fill="#{hex-color($ui-base-lighter-color)}" d="M21.69 233.366c-6.45-1.268-13.347-5.63-16.704-10.564-10.705-15.734-1.513-37.724 18.632-44.57l4.8-1.632.173-17.753c.146-14.77.515-19.063 2.2-25.55 6.736-25.944 24.46-46.032 47.766-54.137 11.913-4.143 19.558-5.366 34.178-5.47l13.828-.096V71.12c0-4.755 2.853-17.457 5.238-23.327 8.588-21.137 26.735-35.957 52.153-42.593 23.248-6.07 50.153-6.415 71.863-.923 11.14 2.82 25.686 9.957 33.857 16.615 19.335 15.756 31.82 41.05 35.183 71.275.59 5.305.672 5.435 3.11 4.926 11.833-2.474 30.4-3.132 40.065-1.42 24.388 4.32 40.568 19.076 47.214 43.058 2.16 7.8 3.953 23.894 3.59 32.237l-.24 5.498 5.156 1.317c6.392 1.633 14.55 7.098 18.003 12.062 1.435 2.062 3.305 6.597 4.156 10.078 1.428 5.84 1.43 6.8.04 12.44-1.807 7.318-5.672 13.252-10.872 16.694-8.508 5.63 3.756 5.33-211.916 5.216-108.56-.056-199.22-.464-201.47-.906z"/></svg>');
+        }
+
+        .float-2 {
+          width: 241px;
+          height: 100px;
+          right: 210px;
+          bottom: 0;
+          animation-duration: 3.5s;
+          animation-delay: 0.2s;
+          background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 536.25 222.1875" height="100" width="241"><path fill="#{hex-color($ui-base-lighter-color)}" d="M42.626 221.23c-14.104-1.174-26.442-5.133-32.825-10.534-4.194-3.548-7.684-10.66-8.868-18.075-1.934-12.102.633-22.265 7.528-29.81 7.61-8.328 19.998-12.76 39.855-14.257l8.47-.638-2.08-6.223c-4.826-14.422-6.357-24.813-6.37-43.255-.012-14.923.28-18.513 2.1-25.724 2.283-9.048 8.483-23.034 13.345-30.1 14.76-21.45 43.505-38.425 70.535-41.65 30.628-3.655 64.47 12.073 89.668 41.673l5.955 6.995 2.765-4.174c1.52-2.296 5.74-6.93 9.376-10.295 18.382-17.02 43.436-20.676 73.352-10.705 12.158 4.052 21.315 9.53 29.64 17.733 12.752 12.562 18.16 25.718 18.19 44.26l.02 10.98 2.312-3.01c15.64-20.365 42.29-20.485 62.438-.28 3.644 3.653 7.558 8.593 8.697 10.976 4.895 10.24 5.932 25.688 2.486 37.046-.76 2.507-1.388 4.816-1.393 5.13-.006.316 6.845.87 15.224 1.234 53.06 2.297 76.356 12.98 81.817 37.526 3.554 15.973-3.71 28.604-19.566 34.02-4.554 1.555-17.922 1.655-234.517 1.757-126.327.06-233.497-.21-238.154-.597z"/></svg>');
+        }
+
+        .float-3 {
+          width: 267px;
+          height: 140px;
+          right: 110px;
+          top: -30px;
+          animation-duration: 4s;
+          animation-delay: 0.5s;
+          background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 388.125 202.5" height="140" width="267"><path fill="#{hex-color($ui-base-lighter-color)}" d="M181.37 201.458c-17.184-1.81-36.762-8.944-49.523-18.05l-5.774-4.12-8.074 2.63c-11.468 3.738-21.382 4.962-35.815 4.422-14.79-.554-24.577-2.845-36.716-8.594-15.483-7.332-28.498-19.98-35.985-34.968C2.44 128.675-.94 108.435.9 91.356c3.362-31.234 18.197-53.698 43.63-66.074 12.803-6.23 22.384-8.55 37.655-9.122 14.433-.54 24.347.684 35.814 4.42l8.073 2.633 5.635-4.01c24.81-17.656 60.007-23.332 92.914-14.985 10.11 2.565 25.498 9.62 33.102 15.178l5.068 3.704 7.632-2.564c10.89-3.66 21.086-4.916 35.516-4.376 45.816 1.716 76.422 30.03 81.285 75.196 1.84 17.08-1.54 37.32-8.585 51.422-7.487 14.99-20.502 27.636-35.984 34.968-12.14 5.75-21.926 8.04-36.716 8.593-14.43.54-24.626-.716-35.516-4.376l-7.632-2.564-5.068 3.704c-12.844 9.387-32.714 16.488-51.545 18.42-10.607 1.09-13.916 1.08-24.81-.066z"/></svg>');
+        }
+      }
+
+      .heading {
+        position: relative;
+        z-index: 4;
+        padding-bottom: 150px;
+      }
+
+      .simple_form,
+      .closed-registrations-message {
+        background: darken($ui-base-color, 4%);
+        width: 280px;
+        padding: 15px 20px;
+        border-radius: 4px 4px 0 0;
+        line-height: initial;
+        position: relative;
+        z-index: 4;
+
+        .actions {
+          margin-bottom: 0;
+
+          button,
+          .button,
+          .block-button {
+            margin-bottom: 0;
+          }
+        }
+      }
+
+      .closed-registrations-message {
+        min-height: 330px;
+        display: flex;
+        flex-direction: column;
+        justify-content: space-between;
+      }
+    }
+  }
+
+  .about-short {
+    background: darken($ui-base-color, 4%);
+    padding: 50px 0 30px;
+    font-family: 'mastodon-font-sans-serif', sans-serif;
+    font-size: 16px;
+    font-weight: 400;
+    font-size: 16px;
+    line-height: 30px;
+    color: $ui-primary-color;
+
+    a {
+      color: $ui-highlight-color;
+      text-decoration: underline;
+    }
+  }
+
+  .information-board {
+    background: darken($ui-base-color, 4%);
+    padding: 20px 0;
+
+    .container {
+      position: relative;
+      padding-right: 280px + 15px;
+    }
+
+    .information-board-sections {
+      display: flex;
+      justify-content: space-between;
+      flex-wrap: wrap;
+    }
+
+    .section {
+      flex: 1 0 0;
+      font-family: 'mastodon-font-sans-serif', sans-serif;
+      font-size: 16px;
+      line-height: 28px;
+      color: $primary-text-color;
+      text-align: right;
+      padding: 10px 15px;
+
+      span,
+      strong {
+        display: block;
+      }
+
+      span {
+        &:last-child {
+          color: $ui-secondary-color;
+        }
+      }
+
+      strong {
+        font-weight: 500;
+        font-size: 32px;
+        line-height: 48px;
+      }
+    }
+
+    .panel {
+      position: absolute;
+      width: 280px;
+      box-sizing: border-box;
+      background: darken($ui-base-color, 8%);
+      padding: 20px;
+      padding-top: 10px;
+      border-radius: 4px 4px 0 0;
+      right: 0;
+      bottom: -40px;
+
+      .panel-header {
+        font-family: 'mastodon-font-display', sans-serif;
+        font-size: 14px;
+        line-height: 24px;
+        font-weight: 500;
+        color: $ui-primary-color;
+        padding-bottom: 5px;
+        margin-bottom: 15px;
+        border-bottom: 1px solid lighten($ui-base-color, 4%);
+        text-overflow: ellipsis;
+        white-space: nowrap;
+        overflow: hidden;
+
+        a,
+        span {
+          font-weight: 400;
+          color: darken($ui-primary-color, 10%);
+        }
+
+        a {
+          text-decoration: none;
+        }
+      }
+    }
+
+    .owner {
+      text-align: center;
+
+      .avatar {
+        width: 80px;
+        height: 80px;
+        margin: 0 auto;
+        margin-bottom: 15px;
+
+        img {
+          display: block;
+          width: 80px;
+          height: 80px;
+          border-radius: 48px;
+        }
+      }
+
+      .name {
+        font-size: 14px;
+
+        a {
+          display: block;
+          color: $primary-text-color;
+          text-decoration: none;
+
+          &:hover {
+            .display_name {
+              text-decoration: underline;
+            }
+          }
+        }
+
+        .username {
+          display: block;
+          color: $ui-primary-color;
+        }
+      }
+    }
+  }
+
+  .features {
+    padding: 50px 0;
+
+    .container {
+      display: flex;
+    }
+
+    #mastodon-timeline {
+      display: flex;
+      -webkit-overflow-scrolling: touch;
+      -ms-overflow-style: -ms-autohiding-scrollbar;
+      font-family: 'mastodon-font-sans-serif', sans-serif;
+      font-size: 13px;
+      line-height: 18px;
+      font-weight: 400;
+      color: $primary-text-color;
+      width: 330px;
+      margin-right: 30px;
+      flex: 0 0 auto;
+      background: $ui-base-color;
+      overflow: hidden;
+      border-radius: 4px;
+      box-shadow: 0 0 6px rgba($black, 0.1);
+
+      .column-header {
+        color: inherit;
+        font-family: inherit;
+        font-size: 16px;
+        line-height: inherit;
+        font-weight: inherit;
+        margin: 0;
+        padding: 15px;
+      }
+
+      .column {
+        padding: 0;
+        border-radius: 4px;
+        overflow: hidden;
+      }
+
+      .scrollable {
+        height: 400px;
+      }
+
+      p {
+        font-size: inherit;
+        line-height: inherit;
+        font-weight: inherit;
+        color: $primary-text-color;
+        margin-bottom: 20px;
+
+        &:last-child {
+          margin-bottom: 0;
+        }
+
+        a {
+          color: $ui-secondary-color;
+          text-decoration: none;
+        }
+      }
+    }
+
+    .about-mastodon {
+      max-width: 675px;
+
+      p {
+        margin-bottom: 20px;
+      }
+
+      .features-list {
+        margin-top: 20px;
+
+        .features-list__row {
+          display: flex;
+          padding: 10px 0;
+          justify-content: space-between;
+
+          &:first-child {
+            padding-top: 0;
+          }
+
+          .visual {
+            flex: 0 0 auto;
+            display: flex;
+            align-items: center;
+            margin-left: 15px;
+
+            .fa {
+              display: block;
+              color: $ui-primary-color;
+              font-size: 48px;
+            }
+          }
+
+          .text {
+            font-size: 16px;
+            line-height: 30px;
+            color: $ui-primary-color;
+
+            h6 {
+              font-size: inherit;
+              line-height: inherit;
+              margin-bottom: 0;
+            }
+          }
+        }
+      }
+    }
+  }
+
+  .extended-description {
+    padding: 50px 0;
+    font-family: 'mastodon-font-sans-serif', sans-serif;
+    font-size: 16px;
+    font-weight: 400;
+    font-size: 16px;
+    line-height: 30px;
+    color: $ui-primary-color;
+
+    a {
+      color: $ui-highlight-color;
+      text-decoration: underline;
+    }
+  }
+
+  .footer-links {
+    padding-bottom: 50px;
+    text-align: right;
+    color: $ui-base-lighter-color;
+
+    p {
+      font-size: 14px;
+    }
+
+    a {
+      color: inherit;
+      text-decoration: underline;
+    }
+  }
+
+  @media screen and (max-width: 840px) {
+    .container {
+      padding: 0 20px;
+    }
+
+    .information-board {
+
+      .container {
+        padding-right: 20px;
+      }
+
+      .section {
+        text-align: center;
+      }
+
+      .panel {
+        position: static;
+        margin-top: 20px;
+        width: 100%;
+        border-radius: 4px;
+
+        .panel-header {
+          text-align: center;
+        }
+      }
+    }
+
+    .header-wrapper .mascot {
+      left: 20px;
+    }
+  }
+
+  @media screen and (max-width: 689px) {
+    .header-wrapper .mascot {
+      display: none;
+    }
+  }
+
+  @media screen and (max-width: 675px) {
+    .header-wrapper {
+      padding-top: 0;
+
+      &.compact {
+        padding-bottom: 0;
+      }
+
+      &.compact .hero .heading {
+        text-align: initial;
+      }
+    }
+
+    .header .container,
+    .features .container {
+      display: block;
+    }
+
+    .header {
+
+      .links {
+        padding-top: 15px;
+        background: darken($ui-base-color, 4%);
+
+        a {
+          padding: 12px 8px;
+        }
+
+        .nav {
+          display: flex;
+          flex-flow: row wrap;
+          justify-content: space-around;
+        }
+
+        .brand img {
+          left: 0;
+          top: 0;
+        }
+      }
+
+      .hero {
+        margin-top: 30px;
+        padding: 0;
+
+        .floats {
+          display: none;
+        }
+
+        .heading {
+          padding: 30px 20px;
+          text-align: center;
+        }
+
+        .simple_form,
+        .closed-registrations-message {
+          background: darken($ui-base-color, 8%);
+          width: 100%;
+          border-radius: 0;
+          box-sizing: border-box;
+        }
+      }
+    }
+
+    .features #mastodon-timeline {
+      height: 70vh;
+      width: 100%;
+      margin-bottom: 50px;
+
+      .column {
+        width: 100%;
+      }
+    }
+  }
+
+  .cta {
+    margin: 20px;
+  }
+
+  &.tag-page {
+    .features {
+      padding: 30px 0;
+
+      .container {
+        max-width: 820px;
+
+        #mastodon-timeline {
+          margin-right: 0;
+          border-top-right-radius: 0;
+        }
+
+        .about-mastodon {
+          .about-hashtag {
+            background: darken($ui-base-color, 4%);
+            padding: 0 20px 20px 30px;
+            border-radius: 0 5px 5px 0;
+
+            .brand {
+              padding-top: 20px;
+              margin-bottom: 20px;
+
+              img {
+                height: 48px;
+                width: auto;
+              }
+            }
+
+            p {
+              strong {
+                color: $ui-secondary-color;
+                font-weight: 700;
+              }
+            }
+
+            .cta {
+              margin: 0;
+
+              .button {
+                margin-right: 4px;
+              }
+            }
+          }
+
+          .features-list {
+            margin-left: 30px;
+            margin-right: 10px;
+          }
+        }
+      }
+    }
+
+    @media screen and (max-width: 675px) {
+      .features {
+        padding: 10px 0;
+
+        .container {
+          display: flex;
+          flex-direction: column;
+
+          #mastodon-timeline {
+            order: 2;
+            flex: 0 0 auto;
+            height: 60vh;
+            margin-bottom: 20px;
+            border-top-right-radius: 4px;
+          }
+
+          .about-mastodon {
+            order: 1;
+            flex: 0 0 auto;
+            max-width: 100%;
+
+            .about-hashtag {
+              background: unset;
+              padding: 0;
+              border-radius: 0;
+
+              .cta {
+                margin: 20px 0;
+              }
+            }
+
+            .features-list {
+              display: none;
+            }
+          }
+        }
+      }
+    }
+  }
+}
+
+@keyframes floating {
+  from {
+    transform: translate(0, 0);
+  }
+
+  65% {
+    transform: translate(0, 4px);
+  }
+
+  to {
+    transform: translate(0, -0);
+  }
+}
diff --git a/app/javascript/styles/mastodon/accounts.scss b/app/javascript/styles/mastodon/accounts.scss
new file mode 100644
index 00000000000..23e20a36687
--- /dev/null
+++ b/app/javascript/styles/mastodon/accounts.scss
@@ -0,0 +1,549 @@
+.card {
+  background-color: lighten($ui-base-color, 4%);
+  background-size: cover;
+  background-position: center;
+  border-radius: 4px 4px 0 0;
+  box-shadow: 0 0 15px rgba($base-shadow-color, 0.2);
+  overflow: hidden;
+  position: relative;
+  display: flex;
+
+  &::after {
+    background: rgba(darken($ui-base-color, 8%), 0.5);
+    display: block;
+    content: "";
+    position: absolute;
+    left: 0;
+    top: 0;
+    width: 100%;
+    height: 100%;
+    z-index: 1;
+  }
+
+  @media screen and (max-width: 740px) {
+    border-radius: 0;
+    box-shadow: none;
+  }
+
+  .card__illustration {
+    padding: 60px 0;
+    position: relative;
+    flex: 1 1 auto;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+  }
+
+  .card__bio {
+    max-width: 260px;
+    flex: 1 1 auto;
+    display: flex;
+    flex-direction: column;
+    justify-content: space-between;
+    background: rgba(darken($ui-base-color, 8%), 0.8);
+    position: relative;
+    z-index: 2;
+  }
+
+  &.compact {
+    padding: 30px 0;
+    border-radius: 4px;
+
+    .avatar {
+      margin-bottom: 0;
+
+      img {
+        object-fit: cover;
+      }
+    }
+  }
+
+  .name {
+    display: block;
+    font-size: 20px;
+    line-height: 18px * 1.5;
+    color: $primary-text-color;
+    padding: 10px 15px;
+    padding-bottom: 0;
+    font-weight: 500;
+    position: relative;
+    z-index: 2;
+    margin-bottom: 30px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+
+    small {
+      display: block;
+      font-size: 14px;
+      color: $ui-highlight-color;
+      font-weight: 400;
+      overflow: hidden;
+      text-overflow: ellipsis;
+    }
+  }
+
+  .avatar {
+    width: 120px;
+    margin: 0 auto;
+    position: relative;
+    z-index: 2;
+
+    img {
+      width: 120px;
+      height: 120px;
+      display: block;
+      border-radius: 120px;
+      box-shadow: 0 0 15px rgba($base-shadow-color, 0.2);
+    }
+  }
+
+  .controls {
+    position: absolute;
+    top: 15px;
+    left: 15px;
+    z-index: 2;
+
+    .icon-button {
+      color: rgba($white, 0.8);
+      text-decoration: none;
+      font-size: 13px;
+      line-height: 13px;
+      font-weight: 500;
+
+      .fa {
+        font-weight: 400;
+        margin-right: 5px;
+      }
+
+      &:hover,
+      &:active,
+      &:focus {
+        color: $white;
+      }
+    }
+  }
+
+  .roles {
+    margin-bottom: 30px;
+    padding: 0 15px;
+  }
+
+  .details-counters {
+    margin-top: 30px;
+    display: flex;
+    flex-direction: row;
+    width: 100%;
+  }
+
+  .counter {
+    width: 33.3%;
+    box-sizing: border-box;
+    flex: 0 0 auto;
+    color: $ui-primary-color;
+    padding: 5px 10px 0;
+    margin-bottom: 10px;
+    border-right: 1px solid lighten($ui-base-color, 4%);
+    cursor: default;
+    text-align: center;
+    position: relative;
+
+    a {
+      display: block;
+    }
+
+    &:last-child {
+      border-right: 0;
+    }
+
+    &::after {
+      display: block;
+      content: "";
+      position: absolute;
+      bottom: -10px;
+      left: 0;
+      width: 100%;
+      border-bottom: 4px solid $ui-primary-color;
+      opacity: 0.5;
+      transition: all 400ms ease;
+    }
+
+    &.active {
+      &::after {
+        border-bottom: 4px solid $ui-highlight-color;
+        opacity: 1;
+      }
+    }
+
+    &:hover {
+      &::after {
+        opacity: 1;
+        transition-duration: 100ms;
+      }
+    }
+
+    a {
+      text-decoration: none;
+      color: inherit;
+    }
+
+    .counter-label {
+      font-size: 12px;
+      display: block;
+      margin-bottom: 5px;
+    }
+
+    .counter-number {
+      font-weight: 500;
+      font-size: 18px;
+      color: $primary-text-color;
+      font-family: 'mastodon-font-display', sans-serif;
+    }
+  }
+
+  .bio {
+    font-size: 14px;
+    line-height: 18px;
+    padding: 0 15px;
+    color: $ui-secondary-color;
+  }
+
+  @media screen and (max-width: 480px) {
+    display: block;
+
+    .card__bio {
+      max-width: none;
+    }
+
+    .name,
+    .roles {
+      text-align: center;
+      margin-bottom: 15px;
+    }
+
+    .bio {
+      margin-bottom: 15px;
+    }
+  }
+}
+
+.pagination {
+  padding: 30px 0;
+  text-align: center;
+  overflow: hidden;
+
+  a,
+  .current,
+  .next,
+  .prev,
+  .page,
+  .gap {
+    font-size: 14px;
+    color: $primary-text-color;
+    font-weight: 500;
+    display: inline-block;
+    padding: 6px 10px;
+    text-decoration: none;
+  }
+
+  .current {
+    background: $simple-background-color;
+    border-radius: 100px;
+    color: $ui-base-color;
+    cursor: default;
+    margin: 0 10px;
+  }
+
+  .gap {
+    cursor: default;
+  }
+
+  .prev,
+  .next {
+    text-transform: uppercase;
+    color: $ui-secondary-color;
+  }
+
+  .prev {
+    float: left;
+    padding-left: 0;
+
+    .fa {
+      display: inline-block;
+      margin-right: 5px;
+    }
+  }
+
+  .next {
+    float: right;
+    padding-right: 0;
+
+    .fa {
+      display: inline-block;
+      margin-left: 5px;
+    }
+  }
+
+  .disabled {
+    cursor: default;
+    color: lighten($ui-base-color, 10%);
+  }
+
+  @media screen and (max-width: 700px) {
+    padding: 30px 20px;
+
+    .page {
+      display: none;
+    }
+
+    .next,
+    .prev {
+      display: inline-block;
+    }
+  }
+}
+
+.accounts-grid {
+  box-shadow: 0 0 15px rgba($base-shadow-color, 0.2);
+  background: darken($simple-background-color, 8%);
+  border-radius: 0 0 4px 4px;
+  padding: 20px 5px;
+  padding-bottom: 10px;
+  overflow: hidden;
+  display: flex;
+  flex-wrap: wrap;
+  z-index: 2;
+  position: relative;
+
+  @media screen and (max-width: 740px) {
+    border-radius: 0;
+    box-shadow: none;
+  }
+
+  .account-grid-card {
+    box-sizing: border-box;
+    width: 335px;
+    background: $simple-background-color;
+    border-radius: 4px;
+    color: $ui-base-color;
+    margin: 0 5px 10px;
+    position: relative;
+
+    @media screen and (max-width: 740px) {
+      width: calc(100% - 10px);
+    }
+
+    .account-grid-card__header {
+      overflow: hidden;
+      height: 100px;
+      border-radius: 4px 4px 0 0;
+      background-color: lighten($ui-base-color, 4%);
+      background-size: cover;
+      background-position: center;
+      position: relative;
+
+      &::after {
+        background: rgba(darken($ui-base-color, 8%), 0.5);
+        display: block;
+        content: "";
+        position: absolute;
+        left: 0;
+        top: 0;
+        width: 100%;
+        height: 100%;
+        z-index: 1;
+      }
+    }
+
+    .account-grid-card__avatar {
+      box-sizing: border-box;
+      padding: 15px;
+      position: absolute;
+      z-index: 2;
+      top: 100px - (40px + 2px);
+      left: -2px;
+    }
+
+    .avatar {
+      width: 80px;
+      height: 80px;
+
+      img {
+        display: block;
+        width: 80px;
+        height: 80px;
+        border-radius: 80px;
+        border: 2px solid $simple-background-color;
+        background: $simple-background-color;
+      }
+    }
+
+    .name {
+      padding: 15px;
+      padding-top: 10px;
+      padding-left: 15px + 80px + 15px;
+
+      a {
+        display: block;
+        color: $ui-base-color;
+        text-decoration: none;
+        text-overflow: ellipsis;
+        overflow: hidden;
+        font-weight: 500;
+
+        &:hover {
+          .display_name {
+            text-decoration: underline;
+          }
+        }
+      }
+    }
+
+    .display_name {
+      font-size: 16px;
+      display: block;
+      text-overflow: ellipsis;
+      overflow: hidden;
+    }
+
+    .username {
+      color: lighten($ui-base-color, 34%);
+      font-size: 14px;
+      font-weight: 400;
+    }
+
+    .note {
+      padding: 10px 15px;
+      padding-top: 15px;
+      box-sizing: border-box;
+      color: lighten($ui-base-color, 26%);
+      word-wrap: break-word;
+      min-height: 80px;
+    }
+  }
+}
+
+.nothing-here {
+  width: 100%;
+  display: block;
+  color: $ui-primary-color;
+  font-size: 14px;
+  font-weight: 500;
+  text-align: center;
+  padding: 60px 0;
+  padding-top: 55px;
+  cursor: default;
+}
+
+.account-card {
+  padding: 14px 10px;
+  background: $simple-background-color;
+  border-radius: 4px;
+  text-align: left;
+  box-shadow: 0 0 15px rgba($base-shadow-color, 0.2);
+
+  .detailed-status__display-name {
+    display: block;
+    overflow: hidden;
+    margin-bottom: 15px;
+
+    &:last-child {
+      margin-bottom: 0;
+    }
+
+    & > div {
+      float: left;
+      margin-right: 10px;
+      width: 48px;
+      height: 48px;
+    }
+
+    .avatar {
+      display: block;
+      border-radius: 4px;
+    }
+
+    .display-name {
+      display: block;
+      max-width: 100%;
+      overflow: hidden;
+      white-space: nowrap;
+      text-overflow: ellipsis;
+      cursor: default;
+
+      strong {
+        font-weight: 500;
+        color: $ui-base-color;
+      }
+
+      span {
+        font-size: 14px;
+        color: $ui-primary-color;
+      }
+    }
+
+    &:hover {
+      .display-name {
+        strong {
+          text-decoration: none;
+        }
+      }
+    }
+  }
+
+  .account__header__content {
+    font-size: 14px;
+    color: $ui-base-color;
+  }
+}
+
+.activity-stream-tabs {
+  background: $simple-background-color;
+  border-bottom: 1px solid $ui-secondary-color;
+  position: relative;
+  z-index: 2;
+
+  a {
+    display: inline-block;
+    padding: 15px;
+    text-decoration: none;
+    color: $ui-highlight-color;
+    text-transform: uppercase;
+    font-weight: 500;
+
+    &:hover,
+    &:active,
+    &:focus {
+      color: lighten($ui-highlight-color, 8%);
+    }
+
+    &.active {
+      color: $ui-base-color;
+      cursor: default;
+    }
+  }
+}
+
+.account-role {
+  display: inline-block;
+  padding: 4px 6px;
+  cursor: default;
+  border-radius: 3px;
+  font-size: 12px;
+  line-height: 12px;
+  font-weight: 500;
+  color: $ui-secondary-color;
+  background-color: rgba($ui-secondary-color, 0.1);
+  border: 1px solid rgba($ui-secondary-color, 0.5);
+
+  &.moderator {
+    color: $success-green;
+    background-color: rgba($success-green, 0.1);
+    border-color: rgba($success-green, 0.5);
+  }
+
+  &.admin {
+    color: lighten($error-red, 12%);
+    background-color: rgba(lighten($error-red, 12%), 0.1);
+    border-color: rgba(lighten($error-red, 12%), 0.5);
+  }
+}
diff --git a/app/javascript/styles/mastodon/admin.scss b/app/javascript/styles/mastodon/admin.scss
new file mode 100644
index 00000000000..87bc710af65
--- /dev/null
+++ b/app/javascript/styles/mastodon/admin.scss
@@ -0,0 +1,349 @@
+.admin-wrapper {
+  display: flex;
+  justify-content: center;
+  height: 100%;
+
+  .sidebar-wrapper {
+    flex: 1;
+    height: 100%;
+    background: $ui-base-color;
+    display: flex;
+    justify-content: flex-end;
+  }
+
+  .sidebar {
+    width: 240px;
+    height: 100%;
+    padding: 0;
+    overflow-y: auto;
+
+    .logo {
+      display: block;
+      margin: 40px auto;
+      width: 100px;
+      height: 100px;
+    }
+
+    ul {
+      list-style: none;
+      border-radius: 4px 0 0 4px;
+      overflow: hidden;
+      margin-bottom: 20px;
+
+      a {
+        display: block;
+        padding: 15px;
+        color: rgba($primary-text-color, 0.7);
+        text-decoration: none;
+        transition: all 200ms linear;
+        border-radius: 4px 0 0 4px;
+
+        i.fa {
+          margin-right: 5px;
+        }
+
+        &:hover {
+          color: $primary-text-color;
+          background-color: darken($ui-base-color, 5%);
+          transition: all 100ms linear;
+        }
+
+        &.selected {
+          background: darken($ui-base-color, 2%);
+          border-radius: 4px 0 0;
+        }
+      }
+
+      ul {
+        background: darken($ui-base-color, 4%);
+        border-radius: 0 0 0 4px;
+        margin: 0;
+
+        a {
+          border: 0;
+          padding: 15px 35px;
+
+          &.selected {
+            color: $primary-text-color;
+            background-color: $ui-highlight-color;
+            border-bottom: 0;
+            border-radius: 0;
+
+            &:hover {
+              background-color: lighten($ui-highlight-color, 5%);
+            }
+          }
+        }
+      }
+    }
+  }
+
+  .content-wrapper {
+    flex: 2;
+    overflow: auto;
+  }
+
+  .content {
+    max-width: 700px;
+    padding: 20px 15px;
+    padding-top: 60px;
+    padding-left: 25px;
+
+    h2 {
+      color: $ui-secondary-color;
+      font-size: 24px;
+      line-height: 28px;
+      font-weight: 400;
+      margin-bottom: 40px;
+    }
+
+    h3 {
+      color: $ui-secondary-color;
+      font-size: 20px;
+      line-height: 28px;
+      font-weight: 400;
+      margin-bottom: 30px;
+    }
+
+    h6 {
+      font-size: 16px;
+      color: $ui-secondary-color;
+      line-height: 28px;
+      font-weight: 400;
+    }
+
+    & > p {
+      font-size: 14px;
+      line-height: 18px;
+      color: $ui-secondary-color;
+      margin-bottom: 20px;
+
+      strong {
+        color: $primary-text-color;
+        font-weight: 500;
+      }
+    }
+
+    hr {
+      margin: 20px 0;
+      border: 0;
+      background: transparent;
+      border-bottom: 1px solid $ui-base-color;
+    }
+
+    .muted-hint {
+      color: $ui-primary-color;
+
+      a {
+        color: $ui-highlight-color;
+      }
+    }
+
+    .positive-hint {
+      color: $valid-value-color;
+      font-weight: 500;
+    }
+  }
+
+  .simple_form {
+    max-width: 400px;
+
+    &.edit_user,
+    &.new_form_admin_settings,
+    &.new_form_two_factor_confirmation,
+    &.new_form_delete_confirmation,
+    &.new_import,
+    &.new_domain_block,
+    &.edit_domain_block {
+      max-width: none;
+    }
+
+    .form_two_factor_confirmation_code,
+    .form_delete_confirmation_password {
+      max-width: 400px;
+    }
+
+    .actions {
+      max-width: 400px;
+    }
+  }
+
+  @media screen and (max-width: 600px) {
+    display: block;
+    overflow-y: auto;
+    -webkit-overflow-scrolling: touch;
+
+    .sidebar-wrapper,
+    .content-wrapper {
+      flex: 0 0 auto;
+      height: auto;
+      overflow: initial;
+    }
+
+    .sidebar {
+      width: 100%;
+      padding: 10px 0;
+      height: auto;
+
+      .logo {
+        margin: 20px auto;
+      }
+    }
+
+    .content {
+      padding-top: 20px;
+    }
+  }
+}
+
+.filters {
+  display: flex;
+  flex-wrap: wrap;
+
+  .filter-subset {
+    flex: 0 0 auto;
+    margin: 0 40px 10px 0;
+
+    &:last-child {
+      margin-bottom: 20px;
+    }
+
+    ul {
+      margin-top: 5px;
+      list-style: none;
+
+      li {
+        display: inline-block;
+        margin-right: 5px;
+      }
+    }
+
+    strong {
+      font-weight: 500;
+      text-transform: uppercase;
+      font-size: 12px;
+    }
+
+    a {
+      display: inline-block;
+      color: rgba($primary-text-color, 0.7);
+      text-decoration: none;
+      text-transform: uppercase;
+      font-size: 12px;
+      font-weight: 500;
+      border-bottom: 2px solid $ui-base-color;
+
+      &:hover {
+        color: $primary-text-color;
+        border-bottom: 2px solid lighten($ui-base-color, 5%);
+      }
+
+      &.selected {
+        color: $ui-highlight-color;
+        border-bottom: 2px solid $ui-highlight-color;
+      }
+    }
+  }
+}
+
+.report-accounts {
+  display: flex;
+  flex-wrap: wrap;
+  margin-bottom: 20px;
+}
+
+.report-accounts__item {
+  display: flex;
+  flex: 250px;
+  flex-direction: column;
+  margin: 0 5px;
+
+  & > strong {
+    display: block;
+    margin: 0 0 10px -5px;
+    font-weight: 500;
+    font-size: 14px;
+    line-height: 18px;
+    color: $ui-secondary-color;
+  }
+
+  .account-card {
+    flex: 1 1 auto;
+  }
+}
+
+.report-status,
+.account-status {
+  display: flex;
+  margin-bottom: 10px;
+
+  .activity-stream {
+    flex: 2 0 0;
+    margin-right: 20px;
+    max-width: calc(100% - 60px);
+
+    .entry {
+      border-radius: 4px;
+    }
+  }
+}
+
+.report-status__actions,
+.account-status__actions {
+  flex: 0 0 auto;
+  display: flex;
+  flex-direction: column;
+
+  .icon-button {
+    font-size: 24px;
+    width: 24px;
+    text-align: center;
+    margin-bottom: 10px;
+  }
+}
+
+.batch-form-box {
+  display: flex;
+  flex-wrap: wrap;
+  margin-bottom: 5px;
+
+  #form_status_batch_action {
+    margin: 0 5px 5px 0;
+    font-size: 14px;
+  }
+
+  input.button {
+    margin: 0 5px 5px 0;
+  }
+
+  .media-spoiler-toggle-buttons {
+    margin-left: auto;
+
+    .button {
+      overflow: visible;
+      margin: 0 0 5px 5px;
+      float: right;
+    }
+  }
+}
+
+.batch-checkbox,
+.batch-checkbox-all {
+  display: flex;
+  align-items: center;
+  margin-right: 5px;
+}
+
+.back-link {
+  margin-bottom: 10px;
+  font-size: 14px;
+
+  a {
+    color: $classic-highlight-color;
+    text-decoration: none;
+
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+}
diff --git a/app/javascript/styles/mastodon/basics.scss b/app/javascript/styles/mastodon/basics.scss
new file mode 100644
index 00000000000..b5d77ff63bc
--- /dev/null
+++ b/app/javascript/styles/mastodon/basics.scss
@@ -0,0 +1,122 @@
+body {
+  font-family: 'mastodon-font-sans-serif', sans-serif;
+  background: $ui-base-color;
+  background-size: cover;
+  background-attachment: fixed;
+  font-size: 13px;
+  line-height: 18px;
+  font-weight: 400;
+  color: $primary-text-color;
+  padding-bottom: 20px;
+  text-rendering: optimizelegibility;
+  font-feature-settings: "kern";
+  text-size-adjust: none;
+  -webkit-tap-highlight-color: rgba(0,0,0,0);
+  -webkit-tap-highlight-color: transparent;
+
+  &.system-font {
+    // system-ui => standard property (Chrome/Android WebView 56+, Opera 43+, Safari 11+)
+    // -apple-system => Safari <11 specific
+    // BlinkMacSystemFont => Chrome <56 on macOS specific
+    // Segoe UI => Windows 7/8/10
+    // Oxygen => KDE
+    // Ubuntu => Unity/Ubuntu
+    // Cantarell => GNOME
+    // Fira Sans => Firefox OS
+    // Droid Sans => Older Androids (<4.0)
+    // Helvetica Neue => Older macOS <10.11
+    // mastodon-font-sans-serif => web-font (Roboto) fallback and newer Androids (>=4.0)
+    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", mastodon-font-sans-serif, sans-serif;
+  }
+
+  &.app-body {
+    position: absolute;
+    width: 100%;
+    height: 100%;
+    padding: 0;
+    background: $ui-base-color;
+  }
+
+  &.about-body {
+    background: darken($ui-base-color, 8%);
+    padding-bottom: 0;
+  }
+
+  &.tag-body {
+    background: darken($ui-base-color, 8%);
+    padding-bottom: 0;
+  }
+
+  &.embed {
+    background: transparent;
+    margin: 0;
+    padding-bottom: 0;
+
+    .container {
+      position: absolute;
+      width: 100%;
+      height: 100%;
+      overflow: hidden;
+    }
+  }
+
+  &.admin {
+    background: darken($ui-base-color, 4%);
+    position: fixed;
+    width: 100%;
+    height: 100%;
+    padding: 0;
+  }
+
+  &.error {
+    position: absolute;
+    text-align: center;
+    color: $ui-primary-color;
+    background: $ui-base-color;
+    width: 100%;
+    height: 100%;
+    padding: 0;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+
+    .dialog {
+      vertical-align: middle;
+      margin: 20px;
+
+      img {
+        display: block;
+        max-width: 470px;
+        width: 100%;
+        height: auto;
+        margin-top: -120px;
+      }
+
+      h1 {
+        font-size: 20px;
+        line-height: 28px;
+        font-weight: 400;
+      }
+    }
+  }
+}
+
+button {
+  font-family: inherit;
+  cursor: pointer;
+
+  &:focus {
+    outline: none;
+  }
+}
+
+.app-holder {
+  &,
+  & > div {
+    display: flex;
+    width: 100%;
+    height: 100%;
+    align-items: center;
+    justify-content: center;
+  }
+}
diff --git a/app/javascript/styles/mastodon/boost.scss b/app/javascript/styles/mastodon/boost.scss
new file mode 100644
index 00000000000..31053deccee
--- /dev/null
+++ b/app/javascript/styles/mastodon/boost.scss
@@ -0,0 +1,18 @@
+@function hex-color($color) {
+  @if type-of($color) == 'color' {
+    $color: str-slice(ie-hex-str($color), 4);
+  }
+  @return '%23' + unquote($color)
+}
+
+button.icon-button i.fa-retweet {
+  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='22' height='209'><path d='M4.97 3.16c-.1.03-.17.1-.22.18L.8 8.24c-.2.3.03.78.4.8H3.6v2.68c0 4.26-.55 3.62 3.66 3.62h7.66l-2.3-2.84c-.03-.02-.03-.04-.05-.06H7.27c-.44 0-.72-.3-.72-.72v-2.7h2.5c.37.03.63-.48.4-.77L5.5 3.35c-.12-.17-.34-.25-.53-.2zm12.16.43c-.55-.02-1.32.02-2.4.02H7.1l2.32 2.85.03.06h5.25c.42 0 .72.28.72.72v2.7h-2.5c-.36.02-.56.54-.3.8l3.92 4.9c.18.25.6.25.78 0l3.94-4.9c.26-.28 0-.83-.37-.8H18.4v-2.7c0-3.15.4-3.62-1.25-3.66z' fill='#{hex-color($ui-base-lighter-color)}' stroke-width='0'/><path d='M7.78 19.66c-.24.02-.44.25-.44.5v2.46h-.06c-1.08 0-1.86-.03-2.4-.03-1.64 0-1.25.43-1.25 3.65v4.47c0 4.26-.56 3.62 3.65 3.62H8.5l-1.3-1.06c-.1-.08-.18-.2-.2-.3-.02-.17.06-.35.2-.45l1.33-1.1H7.28c-.44 0-.72-.3-.72-.7v-4.48c0-.44.28-.72.72-.72h.06v2.5c0 .38.54.63.82.38l4.9-3.93c.25-.18.25-.6 0-.78l-4.9-3.92c-.1-.1-.24-.14-.38-.12zm9.34 2.93c-.54-.02-1.3.02-2.4.02h-1.25l1.3 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+
+  &:hover {
+    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='22' height='209'><path d='M4.97 3.16c-.1.03-.17.1-.22.18L.8 8.24c-.2.3.03.78.4.8H3.6v2.68c0 4.26-.55 3.62 3.66 3.62h7.66l-2.3-2.84c-.03-.02-.03-.04-.05-.06H7.27c-.44 0-.72-.3-.72-.72v-2.7h2.5c.37.03.63-.48.4-.77L5.5 3.35c-.12-.17-.34-.25-.53-.2zm12.16.43c-.55-.02-1.32.02-2.4.02H7.1l2.32 2.85.03.06h5.25c.42 0 .72.28.72.72v2.7h-2.5c-.36.02-.56.54-.3.8l3.92 4.9c.18.25.6.25.78 0l3.94-4.9c.26-.28 0-.83-.37-.8H18.4v-2.7c0-3.15.4-3.62-1.25-3.66z' fill='#{hex-color(lighten($ui-base-color, 33%))}' stroke-width='0'/><path d='M7.78 19.66c-.24.02-.44.25-.44.5v2.46h-.06c-1.08 0-1.86-.03-2.4-.03-1.64 0-1.25.43-1.25 3.65v4.47c0 4.26-.56 3.62 3.65 3.62H8.5l-1.3-1.06c-.1-.08-.18-.2-.2-.3-.02-.17.06-.35.2-.45l1.33-1.1H7.28c-.44 0-.72-.3-.72-.7v-4.48c0-.44.28-.72.72-.72h.06v2.5c0 .38.54.63.82.38l4.9-3.93c.25-.18.25-.6 0-.78l-4.9-3.92c-.1-.1-.24-.14-.38-.12zm9.34 2.93c-.54-.02-1.3.02-2.4.02h-1.25l1.3 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3.62h7.94l-2.35-2.9h-5.6c-.43 0-.7-.3-.7-.72v-2.3h2.5c.38.03.66-.54.4-.83l-3.97-4.9c-.1-.13-.23-.2-.38-.2zm12 .1c-.55-.02-1.32.03-2.4.03H6.83l2.35 2.9h5.52c.42 0 .72.28.72.72v2.34h-2.6c-.3.1-.43.53-.2.78l3.92 4.9c.18.24.6.24.78 0l3.94-4.9c.22-.3-.02-.78-.37-.8H18.4v-2.33c0-3.15.4-3.62-1.25-3.66zM4.97 193.16c-.1.03-.17.1-.22.18l-3.94 4.9c-.2.3.03.78.4.8H3.6v2.68c0 4.26-.55 3.62 3.66 3.62h7.66l-2.3-2.84c-.03-.02-.03-.04-.05-.06H7.27c-.44 0-.72-.3-.72-.72v-2.7h2.5c.37.03.63-.48.4-.77l-3.96-4.9c-.12-.17-.34-.25-.53-.2zm12.16.43c-.55-.02-1.32.03-2.4.03H7.1l2.32 2.84.03.06h5.25c.42 0 .72.28.72.72v2.7h-2.5c-.36.02-.56.54-.3.8l3.92 4.9c.18.25.6.25.78 0l3.94-4.9c.26-.28 0-.83-.37-.8H18.4v-2.7c0-3.15.4-3.62-1.25-3.66z' fill='#{hex-color($ui-highlight-color)}' stroke-width='0'/></svg>");
+  }
+}
+
+button.icon-button.disabled i.fa-retweet {
+  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='22' height='209'><path d='M4.97 3.16c-.1.03-.17.1-.22.18L.8 8.24c-.2.3.03.78.4.8H3.6v2.68c0 4.26-.55 3.62 3.66 3.62h7.66l-2.3-2.84c-.03-.02-.03-.04-.05-.06H7.27c-.44 0-.72-.3-.72-.72v-2.7h2.5c.37.03.63-.48.4-.77L5.5 3.35c-.12-.17-.34-.25-.53-.2zm12.16.43c-.55-.02-1.32.02-2.4.02H7.1l2.32 2.85.03.06h5.25c.42 0 .72.28.72.72v2.7h-2.5c-.36.02-.56.54-.3.8l3.92 4.9c.18.25.6.25.78 0l3.94-4.9c.26-.28 0-.83-.37-.8H18.4v-2.7c0-3.15.4-3.62-1.25-3.66z' fill='#{hex-color(lighten($ui-base-color, 13%))}' stroke-width='0'/><path d='M7.78 19.66c-.24.02-.44.25-.44.5v2.46h-.06c-1.08 0-1.86-.03-2.4-.03-1.64 0-1.25.43-1.25 3.65v4.47c0 4.26-.56 3.62 3.65 3.62H8.5l-1.3-1.06c-.1-.08-.18-.2-.2-.3-.02-.17.06-.35.2-.45l1.33-1.1H7.28c-.44 0-.72-.3-.72-.7v-4.48c0-.44.28-.72.72-.72h.06v2.5c0 .38.54.63.82.38l4.9-3.93c.25-.18.25-.6 0-.78l-4.9-3.92c-.1-.1-.24-.14-.38-.12zm9.34 2.93c-.54-.02-1.3.02-2.4.02h-1.25l1.3 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.57.2.65.5h-2.43c-.34.05-.53.52-.3.78l3.92 4.95c.18.24.6.24.78 0l3.94-4.94c.22-.27-.02-.76-.37-.77H18.4c.02-3.9.6-3.4-3.66-3.4H7.28c-1.08 0-1.86-.04-2.4-.04zm.15 2.46c-.1.03-.2.1-.28.2l-3.94 4.9c-.2.28.03.77.4.78H3.6c-.02 3.94-.45 3.4 3.66 3.4h7.44c3.65 0 3.74.3 3.7-2.25l-1.1 1.34c-.1.1-.2.17-.32.2-.16 0-.34-.08-.44-.2l-1.65-2.03c-.06.02-.1.04-.18.04H7.28c-.35 0-.57-.2-.66-.5h2.44c.37 0 .63-.5.4-.78l-3.96-4.9c-.1-.15-.3-.23-.47-.2zM4.88 117.6c-1.16 0-1.3.3-1.3 1.56l1.14-1.38c.08-.1.22-.14.34-.16.16 0 .34.04.44.16l2.22 2.75h7c.42 0 .72.28.72.72v.53h-2.6c-.3.1-.43.54-.2.78l3.92 4.9c.18.25.6.25.78 0l3.94-4.9c.22-.28-.02-.77-.37-.78H18.4v-.53c0-4.2.72-3.63-3.66-3.63H7.28c-1.08 0-1.86-.03-2.4-.03zm.1 1.74c-.1.03-.17.1-.23.16L.8 124.44c-.2.28.03.77.4.78H3.6v.5c0 4.26-.55 3.62 3.66 3.62h7.44c1.03 0 1.74.02 2.28 0-.16.02-.34-.03-.44-.15l-2.22-2.76H7.28c-.44 0-.72-.3-.72-.72v-.5h2.5c.37.02.63-.5.4-.78L5.5 119.5c-.12-.15-.34-.22-.53-.16zm12.02 10c1.2-.02 1.4-.25 1.4-1.53l-1.1 1.36c-.07.1-.17.17-.3.18zM5.94 136.6l2.37 2.93h6.42c.42 0 .72.28.72.72v1.25h-2.6c-.3.1-.43.54-.2.78l3.92 4.9c.18.25.6.25.78 0l3.94-4.9c.22-.28-.02-.77-.37-.78H18.4v-1.25c0-4.2.72-3.63-3.66-3.63H7.28c-.6 0-.92-.02-1.34-.03zm-1.72.06c-.4.08-.54.3-.6.75l.6-.74zm.84.93c-.12 0-.24.08-.3.18l-3.95 4.9c-.24.3 0 .83.4.82H3.6v1.22c0 4.26-.55 3.62 3.66 3.62h7.44c.63 0 .97.02 1.4.03l-2.37-2.93H7.28c-.44 0-.72-.3-.72-.72v-1.22h2.5c.4.04.67-.53.4-.8l-3.96-4.92c-.1-.13-.27-.2-.44-.2zm13.28 10.03l-.56.7c.36-.07.5-.3.56-.7zM17.13 155.6c-.55-.02-1.32.03-2.4.03h-8.2l2.38 2.9h5.82c.42 0 .72.28.72.72v1.97H12.9c-.32.06-.48.52-.28.78l3.94 4.94c.2.23.6.22.78-.03l3.94-4.9c.22-.28-.02-.77-.37-.78H18.4v-1.97c0-3.15.4-3.62-1.25-3.66zm-12.1.28c-.1.02-.2.1-.28.18l-3.94 4.9c-.2.3.03.78.4.8H3.6v1.96c0 4.26-.55 3.62 3.66 3.62h8.24l-2.36-2.9H7.28c-.44 0-.72-.3-.72-.72v-1.97h2.5c.37.02.63-.5.4-.78l-3.96-4.9c-.1-.15-.3-.22-.47-.2zM5.13 174.5c-.15 0-.3.07-.38.2L.8 179.6c-.24.27 0 .82.4.8H3.6v2.32c0 4.26-.55 3.62 3.66 3.62h7.94l-2.35-2.9h-5.6c-.43 0-.7-.3-.7-.72v-2.3h2.5c.38.03.66-.54.4-.83l-3.97-4.9c-.1-.13-.23-.2-.38-.2zm12 .1c-.55-.02-1.32.03-2.4.03H6.83l2.35 2.9h5.52c.42 0 .72.28.72.72v2.34h-2.6c-.3.1-.43.53-.2.78l3.92 4.9c.18.24.6.24.78 0l3.94-4.9c.22-.3-.02-.78-.37-.8H18.4v-2.33c0-3.15.4-3.62-1.25-3.66zM4.97 193.16c-.1.03-.17.1-.22.18l-3.94 4.9c-.2.3.03.78.4.8H3.6v2.68c0 4.26-.55 3.62 3.66 3.62h7.66l-2.3-2.84c-.03-.02-.03-.04-.05-.06H7.27c-.44 0-.72-.3-.72-.72v-2.7h2.5c.37.03.63-.48.4-.77l-3.96-4.9c-.12-.17-.34-.25-.53-.2zm12.16.43c-.55-.02-1.32.03-2.4.03H7.1l2.32 2.84.03.06h5.25c.42 0 .72.28.72.72v2.7h-2.5c-.36.02-.56.54-.3.8l3.92 4.9c.18.25.6.25.78 0l3.94-4.9c.26-.28 0-.83-.37-.8H18.4v-2.7c0-3.15.4-3.62-1.25-3.66z' fill='#{hex-color($ui-highlight-color)}' stroke-width='0'/></svg>");
+}
diff --git a/app/javascript/styles/mastodon/compact_header.scss b/app/javascript/styles/mastodon/compact_header.scss
new file mode 100644
index 00000000000..90d98cc8c5e
--- /dev/null
+++ b/app/javascript/styles/mastodon/compact_header.scss
@@ -0,0 +1,34 @@
+.compact-header {
+  h1 {
+    font-size: 24px;
+    line-height: 28px;
+    color: $ui-primary-color;
+    font-weight: 500;
+    margin-bottom: 20px;
+    padding: 0 10px;
+    word-wrap: break-word;
+
+    @media screen and (max-width: 740px) {
+      text-align: center;
+      padding: 20px 10px 0;
+    }
+
+    a {
+      color: inherit;
+      text-decoration: none;
+    }
+
+    small {
+      font-weight: 400;
+      color: $ui-secondary-color;
+    }
+
+    img {
+      display: inline-block;
+      margin-bottom: -5px;
+      margin-right: 15px;
+      width: 36px;
+      height: 36px;
+    }
+  }
+}
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
new file mode 100644
index 00000000000..0ded6f15967
--- /dev/null
+++ b/app/javascript/styles/mastodon/components.scss
@@ -0,0 +1,4377 @@
+@import 'variables';
+
+.app-body {
+  -webkit-overflow-scrolling: touch;
+  -ms-overflow-style: -ms-autohiding-scrollbar;
+}
+
+.button {
+  background-color: darken($ui-highlight-color, 3%);
+  border: 10px none;
+  border-radius: 4px;
+  box-sizing: border-box;
+  color: $primary-text-color;
+  cursor: pointer;
+  display: inline-block;
+  font-family: inherit;
+  font-size: 14px;
+  font-weight: 500;
+  height: 36px;
+  letter-spacing: 0;
+  line-height: 36px;
+  overflow: hidden;
+  padding: 0 16px;
+  position: relative;
+  text-align: center;
+  text-transform: uppercase;
+  text-decoration: none;
+  text-overflow: ellipsis;
+  transition: all 100ms ease-in;
+  white-space: nowrap;
+  width: auto;
+
+  &:active,
+  &:focus,
+  &:hover {
+    background-color: lighten($ui-highlight-color, 7%);
+    transition: all 200ms ease-out;
+  }
+
+  &:disabled {
+    background-color: $ui-primary-color;
+    cursor: default;
+  }
+
+  &.button-alternative {
+    font-size: 16px;
+    line-height: 36px;
+    height: auto;
+    color: $ui-base-color;
+    background: $ui-primary-color;
+    text-transform: none;
+    padding: 4px 16px;
+
+    &:active,
+    &:focus,
+    &:hover {
+      background-color: lighten($ui-primary-color, 4%);
+    }
+  }
+
+  &.button-secondary {
+    font-size: 16px;
+    line-height: 36px;
+    height: auto;
+    color: $ui-primary-color;
+    text-transform: none;
+    background: transparent;
+    padding: 3px 15px;
+    border-radius: 4px;
+    border: 1px solid $ui-primary-color;
+
+    &:active,
+    &:focus,
+    &:hover {
+      border-color: lighten($ui-primary-color, 4%);
+      color: lighten($ui-primary-color, 4%);
+    }
+  }
+
+  &.button--block {
+    display: block;
+    width: 100%;
+  }
+}
+
+.column__wrapper {
+  display: flex;
+  flex: 1 1 auto;
+  position: relative;
+}
+
+.column-icon {
+  background: lighten($ui-base-color, 4%);
+  color: $ui-primary-color;
+  cursor: pointer;
+  font-size: 16px;
+  padding: 15px;
+  position: absolute;
+  right: 0;
+  top: -48px;
+  z-index: 3;
+
+  &:hover {
+    color: lighten($ui-primary-color, 7%);
+  }
+}
+
+.icon-button {
+  display: inline-block;
+  padding: 0;
+  color: $ui-base-lighter-color;
+  border: none;
+  background: transparent;
+  cursor: pointer;
+  transition: color 100ms ease-in;
+
+  &:hover,
+  &:active,
+  &:focus {
+    color: lighten($ui-base-color, 33%);
+    transition: color 200ms ease-out;
+  }
+
+  &.disabled {
+    color: lighten($ui-base-color, 13%);
+    cursor: default;
+  }
+
+  &.active {
+    color: $ui-highlight-color;
+  }
+
+  &::-moz-focus-inner {
+    border: 0;
+  }
+
+  &::-moz-focus-inner,
+  &:focus,
+  &:active {
+    outline: 0 !important;
+  }
+
+  &.inverted {
+    color: lighten($ui-base-color, 33%);
+
+    &:hover,
+    &:active,
+    &:focus {
+      color: $ui-base-lighter-color;
+    }
+
+    &.disabled {
+      color: $ui-primary-color;
+    }
+
+    &.active {
+      color: $ui-highlight-color;
+
+      &.disabled {
+        color: lighten($ui-highlight-color, 13%);
+      }
+    }
+  }
+
+  &.overlayed {
+    box-sizing: content-box;
+    background: rgba($base-overlay-background, 0.6);
+    color: rgba($primary-text-color, 0.7);
+    border-radius: 4px;
+    padding: 2px;
+
+    &:hover {
+      background: rgba($base-overlay-background, 0.9);
+    }
+  }
+}
+
+.text-icon-button {
+  color: lighten($ui-base-color, 33%);
+  border: none;
+  background: transparent;
+  cursor: pointer;
+  font-weight: 600;
+  font-size: 11px;
+  padding: 0 3px;
+  line-height: 27px;
+  outline: 0;
+  transition: color 100ms ease-in;
+
+  &:hover,
+  &:active,
+  &:focus {
+    color: $ui-base-lighter-color;
+    transition: color 200ms ease-out;
+  }
+
+  &.disabled {
+    color: lighten($ui-base-color, 13%);
+    cursor: default;
+  }
+
+  &.active {
+    color: $ui-highlight-color;
+  }
+
+  &::-moz-focus-inner {
+    border: 0;
+  }
+
+  &::-moz-focus-inner,
+  &:focus,
+  &:active {
+    outline: 0 !important;
+  }
+}
+
+.dropdown-menu {
+  position: absolute;
+}
+
+.dropdown--active .icon-button {
+  color: $ui-highlight-color;
+}
+
+.dropdown--active::after {
+  @media screen and (min-width: 631px) {
+    content: "";
+    display: block;
+    position: absolute;
+    width: 0;
+    height: 0;
+    border-style: solid;
+    border-width: 0 4.5px 7.8px;
+    border-color: transparent transparent $ui-secondary-color;
+    bottom: 8px;
+    right: 104px;
+  }
+}
+
+.invisible {
+  font-size: 0;
+  line-height: 0;
+  display: inline-block;
+  width: 0;
+  height: 0;
+  position: absolute;
+
+  img,
+  svg {
+    margin: 0 !important;
+    border: 0 !important;
+    padding: 0 !important;
+    width: 0 !important;
+    height: 0 !important;
+  }
+}
+
+.ellipsis {
+  &::after {
+    content: "…";
+  }
+}
+
+.lightbox .icon-button {
+  color: $ui-base-color;
+}
+
+.compose-form {
+  padding: 10px;
+}
+
+.compose-form__warning {
+  color: darken($ui-secondary-color, 65%);
+  margin-bottom: 15px;
+  background: $ui-primary-color;
+  box-shadow: 0 2px 6px rgba($base-shadow-color, 0.3);
+  padding: 8px 10px;
+  border-radius: 4px;
+  font-size: 13px;
+  font-weight: 400;
+
+  strong {
+    color: darken($ui-secondary-color, 65%);
+    font-weight: 500;
+  }
+
+  a {
+    color: darken($ui-primary-color, 33%);
+    font-weight: 500;
+    text-decoration: underline;
+
+    &:hover,
+    &:active,
+    &:focus {
+      text-decoration: none;
+    }
+  }
+}
+
+.compose-form__modifiers {
+  color: $ui-base-color;
+  font-family: inherit;
+  font-size: 14px;
+  background: $simple-background-color;
+  border-radius: 0 0 4px;
+}
+
+.compose-form__buttons-wrapper {
+  display: flex;
+  justify-content: space-between;
+}
+
+.compose-form__buttons {
+  padding: 10px;
+  background: darken($simple-background-color, 8%);
+  box-shadow: inset 0 5px 5px rgba($base-shadow-color, 0.05);
+  border-radius: 0 0 4px 4px;
+  display: flex;
+
+  .icon-button {
+    box-sizing: content-box;
+    padding: 0 3px;
+  }
+}
+
+.compose-form__upload-button-icon {
+  line-height: 27px;
+}
+
+.compose-form__sensitive-button {
+  display: none;
+
+  &.compose-form__sensitive-button--visible {
+    display: block;
+  }
+
+  .compose-form__sensitive-button__icon {
+    line-height: 27px;
+  }
+}
+
+.compose-form__upload-wrapper {
+  overflow: hidden;
+}
+
+.compose-form__uploads-wrapper {
+  display: flex;
+  flex-direction: row;
+  padding: 5px;
+  flex-wrap: wrap;
+}
+
+.compose-form__upload {
+  flex: 1 1 0;
+  min-width: 40%;
+  margin: 5px;
+
+  &-description {
+    position: absolute;
+    z-index: 2;
+    bottom: 0;
+    left: 0;
+    right: 0;
+    box-sizing: border-box;
+    background: linear-gradient(0deg, rgba($base-shadow-color, 0.8) 0, rgba($base-shadow-color, 0.35) 80%, transparent);
+    padding: 10px;
+    opacity: 0;
+    transition: opacity .1s ease;
+
+    input {
+      background: transparent;
+      color: $ui-secondary-color;
+      border: 0;
+      padding: 0;
+      margin: 0;
+      width: 100%;
+      font-family: inherit;
+      font-size: 14px;
+      font-weight: 500;
+
+      &:focus {
+        color: $white;
+      }
+
+      &::placeholder {
+        opacity: 0.54;
+        color: $ui-secondary-color;
+      }
+    }
+
+    &.active {
+      opacity: 1;
+    }
+  }
+
+  .icon-button {
+    mix-blend-mode: difference;
+  }
+}
+
+.compose-form__upload-thumbnail {
+  border-radius: 4px;
+  background-position: center;
+  background-size: cover;
+  background-repeat: no-repeat;
+  height: 100px;
+  width: 100%;
+}
+
+.compose-form__label {
+  display: block;
+  line-height: 24px;
+  vertical-align: middle;
+
+  &.with-border {
+    border-top: 1px solid $ui-base-color;
+    padding-top: 10px;
+  }
+
+  .compose-form__label__text {
+    display: inline-block;
+    vertical-align: middle;
+    margin-bottom: 14px;
+    margin-left: 8px;
+    color: $ui-primary-color;
+  }
+}
+
+.compose-form__textarea,
+.follow-form__input {
+  background: $simple-background-color;
+
+  &:disabled {
+    background: $ui-secondary-color;
+  }
+}
+
+.compose-form__autosuggest-wrapper {
+  position: relative;
+
+  .emoji-picker-dropdown {
+    position: absolute;
+    right: 5px;
+    top: 5px;
+
+    ::-webkit-scrollbar-track:hover,
+    ::-webkit-scrollbar-track:active {
+      background-color: rgba($base-overlay-background, 0.3);
+    }
+  }
+}
+
+.compose-form__publish {
+  display: flex;
+  min-width: 0;
+}
+
+.compose-form__publish-button-wrapper {
+  overflow: hidden;
+  padding-top: 10px;
+}
+
+.emojione {
+  display: inline-block;
+  font-size: inherit;
+  vertical-align: middle;
+  object-fit: contain;
+  margin: -.2ex .15em .2ex;
+  width: 16px;
+  height: 16px;
+
+  img {
+    width: auto;
+  }
+}
+
+.reply-indicator {
+  border-radius: 4px 4px 0 0;
+  position: relative;
+  bottom: -2px;
+  background: $ui-primary-color;
+  padding: 10px;
+}
+
+.reply-indicator__header {
+  margin-bottom: 5px;
+  overflow: hidden;
+}
+
+.reply-indicator__cancel {
+  float: right;
+  line-height: 24px;
+}
+
+.reply-indicator__display-name {
+  color: $ui-base-color;
+  display: block;
+  max-width: 100%;
+  line-height: 24px;
+  overflow: hidden;
+  padding-right: 25px;
+  text-decoration: none;
+}
+
+.reply-indicator__display-avatar {
+  float: left;
+  margin-right: 5px;
+}
+
+.status__content--with-action {
+  cursor: pointer;
+}
+
+.status__content,
+.reply-indicator__content {
+  font-size: 15px;
+  line-height: 20px;
+  word-wrap: break-word;
+  font-weight: 400;
+  overflow: hidden;
+  white-space: pre-wrap;
+  padding-top: 5px;
+
+  &.status__content--with-spoiler {
+    white-space: normal;
+
+    .status__content__text {
+      white-space: pre-wrap;
+    }
+  }
+
+  .emojione {
+    width: 20px;
+    height: 20px;
+    margin: -5px 0 0;
+  }
+
+  p {
+    margin-bottom: 20px;
+
+    &:last-child {
+      margin-bottom: 0;
+    }
+  }
+
+  a {
+    color: $ui-secondary-color;
+    text-decoration: none;
+
+    &:hover {
+      text-decoration: underline;
+
+      .fa {
+        color: lighten($ui-base-color, 40%);
+      }
+    }
+
+    &.mention {
+      &:hover {
+        text-decoration: none;
+
+        span {
+          text-decoration: underline;
+        }
+      }
+    }
+
+    .fa {
+      color: lighten($ui-base-color, 30%);
+    }
+  }
+
+  .status__content__spoiler-link {
+    background: lighten($ui-base-color, 30%);
+
+    &:hover {
+      background: lighten($ui-base-color, 33%);
+      text-decoration: none;
+    }
+  }
+
+  .status__content__text {
+    display: none;
+
+    &.status__content__text--visible {
+      display: block;
+    }
+  }
+}
+
+.status__content__spoiler-link {
+  display: inline-block;
+  border-radius: 2px;
+  background: transparent;
+  border: 0;
+  color: lighten($ui-base-color, 8%);
+  font-weight: 500;
+  font-size: 11px;
+  padding: 0 6px;
+  text-transform: uppercase;
+  line-height: inherit;
+  cursor: pointer;
+}
+
+.status__prepend-icon-wrapper {
+  left: -26px;
+  position: absolute;
+}
+
+.focusable {
+  &:focus {
+    outline: 0;
+    background: lighten($ui-base-color, 4%);
+
+    .status.status-direct {
+      background: lighten($ui-base-color, 12%);
+    }
+
+    .detailed-status,
+    .detailed-status__action-bar {
+      background: lighten($ui-base-color, 8%);
+    }
+  }
+}
+
+.status {
+  padding: 8px 10px;
+  padding-left: 68px;
+  position: relative;
+  min-height: 48px;
+  border-bottom: 1px solid lighten($ui-base-color, 8%);
+  cursor: default;
+
+  @supports (-ms-overflow-style: -ms-autohiding-scrollbar) {
+    // Add margin to avoid Edge auto-hiding scrollbar appearing over content.
+    // On Edge 16 this is 16px and Edge <=15 it's 12px, so aim for 16px.
+    padding-right: 26px; // 10px + 16px
+  }
+
+  @keyframes fade {
+    0% { opacity: 0; }
+    100% { opacity: 1; }
+  }
+
+  opacity: 1;
+  animation: fade 150ms linear;
+
+  .video-player {
+    margin-top: 8px;
+  }
+
+  &.status-direct {
+    background: lighten($ui-base-color, 8%);
+
+    .icon-button.disabled {
+      color: lighten($ui-base-color, 16%);
+    }
+  }
+
+  &.light {
+    .status__relative-time {
+      color: $ui-primary-color;
+    }
+
+    .status__display-name {
+      color: $ui-base-color;
+    }
+
+    .display-name {
+      strong {
+        color: $ui-base-color;
+      }
+
+      span {
+        color: $ui-primary-color;
+      }
+    }
+
+    .status__content {
+      color: $ui-base-color;
+
+      a {
+        color: $ui-highlight-color;
+      }
+
+      a.status__content__spoiler-link {
+        color: $primary-text-color;
+        background: $ui-primary-color;
+
+        &:hover {
+          background: lighten($ui-primary-color, 8%);
+        }
+      }
+    }
+  }
+}
+
+.notification-favourite {
+  .status.status-direct {
+    background: transparent;
+
+    .icon-button.disabled {
+      color: lighten($ui-base-color, 13%);
+    }
+  }
+}
+
+.status__relative-time {
+  color: $ui-base-lighter-color;
+  float: right;
+  font-size: 14px;
+}
+
+.status__display-name {
+  color: $ui-base-lighter-color;
+}
+
+.status__info .status__display-name {
+  display: block;
+  max-width: 100%;
+  padding-right: 25px;
+}
+
+.status__info {
+  font-size: 15px;
+}
+
+.status-check-box {
+  border-bottom: 1px solid $ui-secondary-color;
+  display: flex;
+
+  .status__content {
+    flex: 1 1 auto;
+    padding: 10px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+}
+
+.status-check-box-toggle {
+  align-items: center;
+  display: flex;
+  flex: 0 0 auto;
+  justify-content: center;
+  padding: 10px;
+}
+
+.status__prepend {
+  margin-left: 68px;
+  color: $ui-base-lighter-color;
+  padding: 8px 0;
+  padding-bottom: 2px;
+  font-size: 14px;
+  position: relative;
+
+  .status__display-name strong {
+    color: $ui-base-lighter-color;
+  }
+
+  > span {
+    display: block;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+}
+
+.status__action-bar {
+  align-items: center;
+  display: flex;
+  margin-top: 5px;
+}
+
+.status__action-bar-button {
+  float: left;
+  margin-right: 18px;
+}
+
+.status__action-bar-dropdown {
+  float: left;
+  height: 23.15px;
+  width: 23.15px;
+}
+
+.detailed-status__action-bar-dropdown {
+  flex: 1 1 auto;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  position: relative;
+}
+
+.detailed-status {
+  background: lighten($ui-base-color, 4%);
+  padding: 14px 10px;
+
+  .status__content {
+    font-size: 19px;
+    line-height: 24px;
+
+    .emojione {
+      width: 24px;
+      height: 24px;
+      margin: -5px 0 0;
+    }
+  }
+
+  .video-player {
+    margin-top: 8px;
+  }
+}
+
+.detailed-status__meta {
+  margin-top: 15px;
+  color: $ui-base-lighter-color;
+  font-size: 14px;
+  line-height: 18px;
+}
+
+.detailed-status__action-bar {
+  background: lighten($ui-base-color, 4%);
+  border-top: 1px solid lighten($ui-base-color, 8%);
+  border-bottom: 1px solid lighten($ui-base-color, 8%);
+  display: flex;
+  flex-direction: row;
+  padding: 10px 0;
+}
+
+.detailed-status__link {
+  color: inherit;
+  text-decoration: none;
+}
+
+.detailed-status__favorites,
+.detailed-status__reblogs {
+  display: inline-block;
+  font-weight: 500;
+  font-size: 12px;
+  margin-left: 6px;
+}
+
+.reply-indicator__content {
+  color: $ui-base-color;
+  font-size: 14px;
+
+  a {
+    color: lighten($ui-base-color, 20%);
+  }
+}
+
+.account {
+  padding: 10px;
+  border-bottom: 1px solid lighten($ui-base-color, 8%);
+
+  .account__display-name {
+    flex: 1 1 auto;
+    display: block;
+    color: $ui-primary-color;
+    overflow: hidden;
+    text-decoration: none;
+    font-size: 14px;
+  }
+}
+
+.account__wrapper {
+  display: flex;
+}
+
+.account__avatar-wrapper {
+  float: left;
+  margin-left: 12px;
+  margin-right: 12px;
+}
+
+.account__avatar {
+  @include avatar-radius();
+  position: relative;
+  cursor: pointer;
+
+  &-inline {
+    display: inline-block;
+    vertical-align: middle;
+    margin-right: 5px;
+  }
+}
+
+.account__avatar-overlay {
+  @include avatar-size(48px);
+
+  &-base {
+    @include avatar-radius();
+    @include avatar-size(36px);
+  }
+
+  &-overlay {
+    @include avatar-radius();
+    @include avatar-size(24px);
+
+    position: absolute;
+    bottom: 0;
+    right: 0;
+    z-index: 1;
+  }
+}
+
+.account__relationship {
+  height: 18px;
+  padding: 10px;
+  white-space: nowrap;
+}
+
+.account__header {
+  flex: 0 0 auto;
+  background: lighten($ui-base-color, 4%);
+  text-align: center;
+  background-size: cover;
+  background-position: center;
+  position: relative;
+
+  & > div {
+    background: rgba(lighten($ui-base-color, 4%), 0.9);
+    padding: 20px 10px;
+  }
+
+  .account__header__content {
+    color: $ui-secondary-color;
+  }
+
+  .account__header__display-name {
+    color: $primary-text-color;
+    display: inline-block;
+    width: 100%;
+    font-size: 20px;
+    line-height: 27px;
+    font-weight: 500;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .account__header__username {
+    color: $ui-highlight-color;
+    font-size: 14px;
+    font-weight: 400;
+    display: block;
+    margin-bottom: 10px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+}
+
+.account__disclaimer {
+  padding: 10px;
+  border-top: 1px solid lighten($ui-base-color, 8%);
+  color: $ui-base-lighter-color;
+
+  strong {
+    font-weight: 500;
+  }
+
+  a {
+    font-weight: 500;
+    color: inherit;
+    text-decoration: underline;
+
+    &:hover,
+    &:focus,
+    &:active {
+      text-decoration: none;
+    }
+  }
+}
+
+.account__header__content {
+  color: $ui-primary-color;
+  font-size: 14px;
+  font-weight: 400;
+  overflow: hidden;
+  word-break: normal;
+  word-wrap: break-word;
+
+  p {
+    margin-bottom: 20px;
+
+    &:last-child {
+      margin-bottom: 0;
+    }
+  }
+
+  a {
+    color: inherit;
+    text-decoration: underline;
+
+    &:hover {
+      text-decoration: none;
+    }
+  }
+}
+
+.account__header__display-name {
+  .emojione {
+    width: 25px;
+    height: 25px;
+  }
+}
+
+.account__action-bar {
+  border-top: 1px solid lighten($ui-base-color, 8%);
+  border-bottom: 1px solid lighten($ui-base-color, 8%);
+  line-height: 36px;
+  overflow: hidden;
+  flex: 0 0 auto;
+  display: flex;
+}
+
+.account__action-bar-dropdown {
+  flex: 0 1 calc(50% - 140px);
+  padding: 10px;
+
+  .dropdown--active {
+    .dropdown__content.dropdown__right {
+      left: 6px;
+      right: initial;
+    }
+
+    &::after {
+      bottom: initial;
+      margin-left: 11px;
+      margin-top: -7px;
+      right: initial;
+    }
+  }
+}
+
+.account__action-bar-links {
+  display: flex;
+  flex: 1 1 auto;
+  line-height: 18px;
+}
+
+.account__action-bar__tab {
+  text-decoration: none;
+  overflow: hidden;
+  flex: 0 1 80px;
+  border-left: 1px solid lighten($ui-base-color, 8%);
+  padding: 10px 5px;
+
+  & > span {
+    display: block;
+    text-transform: uppercase;
+    font-size: 11px;
+    color: $ui-primary-color;
+  }
+
+  strong {
+    display: block;
+    font-size: 15px;
+    font-weight: 500;
+    color: $primary-text-color;
+  }
+
+  abbr {
+    color: $ui-base-lighter-color;
+  }
+}
+
+.account__header__avatar {
+  background-size: 90px 90px;
+  display: block;
+  height: 90px;
+  margin: 0 auto 10px;
+  overflow: hidden;
+  width: 90px;
+}
+
+.account-authorize {
+  padding: 14px 10px;
+
+  .detailed-status__display-name {
+    display: block;
+    margin-bottom: 15px;
+    overflow: hidden;
+  }
+}
+
+.account-authorize__avatar {
+  float: left;
+  margin-right: 10px;
+}
+
+.status__display-name,
+.status__relative-time,
+.detailed-status__display-name,
+.detailed-status__datetime,
+.detailed-status__application,
+.account__display-name {
+  text-decoration: none;
+}
+
+.status__display-name,
+.account__display-name {
+  strong {
+    color: $primary-text-color;
+  }
+}
+
+.muted {
+  .emojione {
+    opacity: 0.5;
+  }
+}
+
+.status__display-name,
+.reply-indicator__display-name,
+.detailed-status__display-name,
+.account__display-name {
+  &:hover strong {
+    text-decoration: underline;
+  }
+}
+
+.account__display-name strong {
+  display: block;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.detailed-status__application,
+.detailed-status__datetime {
+  color: inherit;
+}
+
+.detailed-status__display-name {
+  color: $ui-secondary-color;
+  display: block;
+  line-height: 24px;
+  margin-bottom: 15px;
+  overflow: hidden;
+
+  strong,
+  span {
+    display: block;
+    text-overflow: ellipsis;
+    overflow: hidden;
+  }
+
+  strong {
+    font-size: 16px;
+    color: $primary-text-color;
+  }
+}
+
+.detailed-status__display-avatar {
+  float: left;
+  margin-right: 10px;
+}
+
+.status__avatar {
+  height: 48px;
+  left: 10px;
+  position: absolute;
+  top: 10px;
+  width: 48px;
+}
+
+.muted {
+  .status__content p,
+  .status__content a {
+    color: $ui-base-lighter-color;
+  }
+
+  .status__display-name strong {
+    color: $ui-base-lighter-color;
+  }
+
+  .status__avatar {
+    opacity: 0.5;
+  }
+
+  a.status__content__spoiler-link {
+    background: $ui-base-lighter-color;
+    color: lighten($ui-base-color, 4%);
+
+    &:hover {
+      background: lighten($ui-base-color, 29%);
+      text-decoration: none;
+    }
+  }
+}
+
+.notification__message {
+  margin-left: 68px;
+  padding: 8px 0;
+  padding-bottom: 0;
+  cursor: default;
+  color: $ui-primary-color;
+  font-size: 15px;
+  position: relative;
+
+  .fa {
+    color: $ui-highlight-color;
+  }
+
+  > span {
+    display: block;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+}
+
+.notification__favourite-icon-wrapper {
+  left: -26px;
+  position: absolute;
+
+  .star-icon {
+    color: $gold-star;
+  }
+}
+
+.star-icon.active {
+  color: $gold-star;
+}
+
+.notification__display-name {
+  color: inherit;
+  font-weight: 500;
+  text-decoration: none;
+
+  &:hover {
+    color: $primary-text-color;
+    text-decoration: underline;
+  }
+}
+
+.display-name {
+  display: block;
+  max-width: 100%;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.display-name__html {
+  font-weight: 500;
+}
+
+.display-name__account {
+  font-size: 14px;
+}
+
+.status__relative-time,
+.detailed-status__datetime {
+  &:hover {
+    text-decoration: underline;
+  }
+}
+
+.image-loader {
+  position: relative;
+
+  &.image-loader--loading {
+    .image-loader__preview-canvas {
+      filter: blur(2px);
+    }
+  }
+
+  .image-loader__img {
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    max-width: 100%;
+    max-height: 100%;
+    background-image: none;
+  }
+
+  &.image-loader--amorphous {
+    position: static;
+
+    .image-loader__preview-canvas {
+      display: none;
+    }
+
+    .image-loader__img {
+      position: static;
+      width: auto;
+      height: auto;
+    }
+  }
+}
+
+.navigation-bar {
+  padding: 10px;
+  display: flex;
+  flex-shrink: 0;
+  cursor: default;
+  color: $ui-primary-color;
+
+  strong {
+    color: $primary-text-color;
+  }
+
+  .permalink {
+    text-decoration: none;
+  }
+
+  .icon-button {
+    pointer-events: none;
+    opacity: 0;
+  }
+}
+
+.navigation-bar__profile {
+  flex: 1 1 auto;
+  margin-left: 8px;
+  overflow: hidden;
+}
+
+.navigation-bar__profile-account {
+  display: block;
+  font-weight: 500;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.navigation-bar__profile-edit {
+  color: inherit;
+  text-decoration: none;
+}
+
+.dropdown {
+  display: inline-block;
+}
+
+.dropdown__content {
+  display: none;
+  position: absolute;
+}
+
+.dropdown-menu__separator {
+  border-bottom: 1px solid darken($ui-secondary-color, 8%);
+  margin: 5px 7px 6px;
+  height: 0;
+}
+
+.dropdown-menu {
+  background: $ui-secondary-color;
+  padding: 4px 0;
+  border-radius: 4px;
+  box-shadow: 2px 4px 15px rgba($base-shadow-color, 0.4);
+
+  ul {
+    list-style: none;
+  }
+}
+
+.dropdown-menu__arrow {
+  position: absolute;
+  width: 0;
+  height: 0;
+  border: 0 solid transparent;
+
+  &.left {
+    right: -5px;
+    margin-top: -5px;
+    border-width: 5px 0 5px 5px;
+    border-left-color: $ui-secondary-color;
+  }
+
+  &.top {
+    bottom: -5px;
+    margin-left: -13px;
+    border-width: 5px 7px 0;
+    border-top-color: $ui-secondary-color;
+  }
+
+  &.bottom {
+    top: -5px;
+    margin-left: -13px;
+    border-width: 0 7px 5px;
+    border-bottom-color: $ui-secondary-color;
+  }
+
+  &.right {
+    left: -5px;
+    margin-top: -5px;
+    border-width: 5px 5px 5px 0;
+    border-right-color: $ui-secondary-color;
+  }
+}
+
+.dropdown-menu__item {
+  a {
+    font-size: 13px;
+    line-height: 18px;
+    display: block;
+    padding: 4px 14px;
+    box-sizing: border-box;
+    text-decoration: none;
+    background: $ui-secondary-color;
+    color: $ui-base-color;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+
+    &:focus,
+    &:hover,
+    &:active {
+      background: $ui-highlight-color;
+      color: $ui-secondary-color;
+      outline: 0;
+    }
+  }
+}
+
+.dropdown--active .dropdown__content {
+  display: block;
+  line-height: 18px;
+  max-width: 311px;
+  right: 0;
+  text-align: left;
+  z-index: 9999;
+
+  & > ul {
+    list-style: none;
+    background: $ui-secondary-color;
+    padding: 4px 0;
+    border-radius: 4px;
+    box-shadow: 0 0 15px rgba($base-shadow-color, 0.4);
+    min-width: 140px;
+    position: relative;
+  }
+
+  &.dropdown__right {
+    right: 0;
+  }
+
+  &.dropdown__left {
+    & > ul {
+      left: -98px;
+    }
+  }
+
+  & > ul > li > a {
+    font-size: 13px;
+    line-height: 18px;
+    display: block;
+    padding: 4px 14px;
+    box-sizing: border-box;
+    text-decoration: none;
+    background: $ui-secondary-color;
+    color: $ui-base-color;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+
+    &:focus {
+      outline: 0;
+    }
+
+    &:hover {
+      background: $ui-highlight-color;
+      color: $ui-secondary-color;
+    }
+  }
+}
+
+.dropdown__icon {
+  vertical-align: middle;
+}
+
+.static-content {
+  padding: 10px;
+  padding-top: 20px;
+  color: $ui-base-lighter-color;
+
+  h1 {
+    font-size: 16px;
+    font-weight: 500;
+    margin-bottom: 40px;
+    text-align: center;
+  }
+
+  p {
+    font-size: 13px;
+    margin-bottom: 20px;
+  }
+}
+
+.columns-area {
+  display: flex;
+  flex: 1 1 auto;
+  flex-direction: row;
+  justify-content: flex-start;
+  overflow-x: auto;
+  position: relative;
+}
+
+@media screen and (min-width: 360px) {
+  .columns-area {
+    padding: 10px;
+  }
+
+  .react-swipeable-view-container .columns-area {
+    height: calc(100% - 20px) !important;
+  }
+}
+
+.react-swipeable-view-container {
+  &,
+  .columns-area,
+  .drawer,
+  .column {
+    height: 100%;
+  }
+}
+
+.react-swipeable-view-container > * {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  height: 100%;
+}
+
+.column {
+  width: 330px;
+  position: relative;
+  box-sizing: border-box;
+  display: flex;
+  flex-direction: column;
+
+  > .scrollable {
+    background: $ui-base-color;
+  }
+}
+
+.ui {
+  flex: 0 0 auto;
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  height: 100%;
+  background: darken($ui-base-color, 7%);
+}
+
+.drawer {
+  width: 300px;
+  box-sizing: border-box;
+  display: flex;
+  flex-direction: column;
+  overflow-y: hidden;
+}
+
+.drawer__tab {
+  display: block;
+  flex: 1 1 auto;
+  padding: 15px 5px 13px;
+  color: $ui-primary-color;
+  text-decoration: none;
+  text-align: center;
+  font-size: 16px;
+  border-bottom: 2px solid transparent;
+}
+
+.column,
+.drawer {
+  flex: 1 1 100%;
+  overflow: hidden;
+}
+
+@media screen and (min-width: 360px) {
+  .tabs-bar {
+    margin: 10px;
+    margin-bottom: 0;
+  }
+
+  .search {
+    margin-bottom: 10px;
+  }
+}
+
+@media screen and (max-width: 630px) {
+  .column,
+  .drawer {
+    width: 100%;
+    padding: 0;
+  }
+
+  .columns-area {
+    flex-direction: column;
+  }
+
+  .search__input,
+  .autosuggest-textarea__textarea {
+    font-size: 16px;
+  }
+}
+
+@media screen and (min-width: 631px) {
+  .columns-area {
+    padding: 0;
+  }
+
+  .column,
+  .drawer {
+    flex: 0 0 auto;
+    padding: 10px;
+    padding-left: 5px;
+    padding-right: 5px;
+
+    &:first-child {
+      padding-left: 10px;
+    }
+
+    &:last-child {
+      padding-right: 10px;
+    }
+  }
+
+  .columns-area > div {
+    .column,
+    .drawer {
+      padding-left: 5px;
+      padding-right: 5px;
+    }
+  }
+}
+
+.drawer__pager {
+  box-sizing: border-box;
+  padding: 0;
+  flex-grow: 1;
+  position: relative;
+  overflow: hidden;
+  display: flex;
+}
+
+.drawer__inner {
+  position: absolute;
+  top: 0;
+  left: 0;
+  background: lighten($ui-base-color, 13%);
+  box-sizing: border-box;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  overflow-y: auto;
+  width: 100%;
+  height: 100%;
+
+  &.darker {
+    background: $ui-base-color;
+  }
+}
+
+.pseudo-drawer {
+  background: lighten($ui-base-color, 13%);
+  font-size: 13px;
+  text-align: left;
+}
+
+.drawer__header {
+  flex: 0 0 auto;
+  font-size: 16px;
+  background: lighten($ui-base-color, 8%);
+  margin-bottom: 10px;
+  display: flex;
+  flex-direction: row;
+
+  a {
+    transition: background 100ms ease-in;
+
+    &:hover {
+      background: lighten($ui-base-color, 3%);
+      transition: background 200ms ease-out;
+    }
+  }
+}
+
+.tabs-bar {
+  display: flex;
+  background: lighten($ui-base-color, 8%);
+  flex: 0 0 auto;
+  overflow-y: auto;
+}
+
+.tabs-bar__link {
+  display: block;
+  flex: 1 1 auto;
+  padding: 15px 10px;
+  color: $primary-text-color;
+  text-decoration: none;
+  text-align: center;
+  font-size: 14px;
+  font-weight: 500;
+  border-bottom: 2px solid lighten($ui-base-color, 8%);
+  transition: all 200ms linear;
+
+  .fa {
+    font-weight: 400;
+    font-size: 16px;
+  }
+
+  &.active {
+    border-bottom: 2px solid $ui-highlight-color;
+    color: $ui-highlight-color;
+  }
+
+  &:hover,
+  &:focus,
+  &:active {
+    @media screen and (min-width: 631px) {
+      background: lighten($ui-base-color, 14%);
+      transition: all 100ms linear;
+    }
+  }
+
+  span {
+    margin-left: 5px;
+    display: none;
+  }
+}
+
+@media screen and (min-width: 600px) {
+  .tabs-bar__link {
+    span {
+      display: inline;
+    }
+  }
+}
+
+@media screen and (min-width: 631px) {
+  .tabs-bar {
+    display: none;
+  }
+}
+
+.scrollable {
+  overflow-y: scroll;
+  overflow-x: hidden;
+  flex: 1 1 auto;
+  -webkit-overflow-scrolling: touch;
+  will-change: transform; // improves perf in mobile Chrome
+
+  &.optionally-scrollable {
+    overflow-y: auto;
+  }
+
+  @supports(display: grid) { // hack to fix Chrome <57
+    contain: strict;
+  }
+}
+
+.scrollable.fullscreen {
+  @supports(display: grid) { // hack to fix Chrome <57
+    contain: none;
+  }
+}
+
+.column-back-button {
+  background: lighten($ui-base-color, 4%);
+  color: $ui-highlight-color;
+  cursor: pointer;
+  flex: 0 0 auto;
+  font-size: 16px;
+  border: 0;
+  text-align: unset;
+  padding: 15px;
+  margin: 0;
+  z-index: 3;
+
+  &:hover {
+    text-decoration: underline;
+  }
+}
+
+.column-header__back-button {
+  background: lighten($ui-base-color, 4%);
+  border: 0;
+  font-family: inherit;
+  color: $ui-highlight-color;
+  cursor: pointer;
+  flex: 0 0 auto;
+  font-size: 16px;
+  padding: 0 5px 0 0;
+  z-index: 3;
+
+  &:hover {
+    text-decoration: underline;
+  }
+
+  &:last-child {
+    padding: 0 15px 0 0;
+  }
+}
+
+.column-back-button__icon {
+  display: inline-block;
+  margin-right: 5px;
+}
+
+.column-back-button--slim {
+  position: relative;
+}
+
+.column-back-button--slim-button {
+  cursor: pointer;
+  flex: 0 0 auto;
+  font-size: 16px;
+  padding: 15px;
+  position: absolute;
+  right: 0;
+  top: -48px;
+}
+
+.react-toggle {
+  display: inline-block;
+  position: relative;
+  cursor: pointer;
+  background-color: transparent;
+  border: 0;
+  padding: 0;
+  user-select: none;
+  -webkit-tap-highlight-color: rgba($base-overlay-background, 0);
+  -webkit-tap-highlight-color: transparent;
+}
+
+.react-toggle-screenreader-only {
+  border: 0;
+  clip: rect(0 0 0 0);
+  height: 1px;
+  margin: -1px;
+  overflow: hidden;
+  padding: 0;
+  position: absolute;
+  width: 1px;
+}
+
+.react-toggle--disabled {
+  cursor: not-allowed;
+  opacity: 0.5;
+  transition: opacity 0.25s;
+}
+
+.react-toggle-track {
+  width: 50px;
+  height: 24px;
+  padding: 0;
+  border-radius: 30px;
+  background-color: $ui-base-color;
+  transition: all 0.2s ease;
+}
+
+.react-toggle:hover:not(.react-toggle--disabled) .react-toggle-track {
+  background-color: darken($ui-base-color, 10%);
+}
+
+.react-toggle--checked .react-toggle-track {
+  background-color: $ui-highlight-color;
+}
+
+.react-toggle--checked:hover:not(.react-toggle--disabled) .react-toggle-track {
+  background-color: lighten($ui-highlight-color, 10%);
+}
+
+.react-toggle-track-check {
+  position: absolute;
+  width: 14px;
+  height: 10px;
+  top: 0;
+  bottom: 0;
+  margin-top: auto;
+  margin-bottom: auto;
+  line-height: 0;
+  left: 8px;
+  opacity: 0;
+  transition: opacity 0.25s ease;
+}
+
+.react-toggle--checked .react-toggle-track-check {
+  opacity: 1;
+  transition: opacity 0.25s ease;
+}
+
+.react-toggle-track-x {
+  position: absolute;
+  width: 10px;
+  height: 10px;
+  top: 0;
+  bottom: 0;
+  margin-top: auto;
+  margin-bottom: auto;
+  line-height: 0;
+  right: 10px;
+  opacity: 1;
+  transition: opacity 0.25s ease;
+}
+
+.react-toggle--checked .react-toggle-track-x {
+  opacity: 0;
+}
+
+.react-toggle-thumb {
+  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1) 0ms;
+  position: absolute;
+  top: 1px;
+  left: 1px;
+  width: 22px;
+  height: 22px;
+  border: 1px solid $ui-base-color;
+  border-radius: 50%;
+  background-color: darken($simple-background-color, 2%);
+  box-sizing: border-box;
+  transition: all 0.25s ease;
+}
+
+.react-toggle--checked .react-toggle-thumb {
+  left: 27px;
+  border-color: $ui-highlight-color;
+}
+
+.column-link {
+  background: lighten($ui-base-color, 8%);
+  color: $primary-text-color;
+  display: block;
+  font-size: 16px;
+  padding: 15px;
+  text-decoration: none;
+
+  &:hover {
+    background: lighten($ui-base-color, 11%);
+  }
+}
+
+.column-link__icon {
+  display: inline-block;
+  margin-right: 5px;
+}
+
+.column-subheading {
+  background: $ui-base-color;
+  color: $ui-base-lighter-color;
+  padding: 8px 20px;
+  font-size: 12px;
+  font-weight: 500;
+  text-transform: uppercase;
+  cursor: default;
+}
+
+.autosuggest-textarea,
+.spoiler-input {
+  position: relative;
+}
+
+.autosuggest-textarea__textarea,
+.spoiler-input__input {
+  display: block;
+  box-sizing: border-box;
+  width: 100%;
+  margin: 0;
+  color: $ui-base-color;
+  background: $simple-background-color;
+  padding: 10px;
+  font-family: inherit;
+  font-size: 14px;
+  resize: vertical;
+  border: 0;
+  outline: 0;
+
+  &:focus {
+    outline: 0;
+  }
+
+  @media screen and (max-width: 600px) {
+    font-size: 16px;
+  }
+}
+
+.spoiler-input__input {
+  border-radius: 4px;
+}
+
+.autosuggest-textarea__textarea {
+  min-height: 100px;
+  border-radius: 4px 4px 0 0;
+  padding-bottom: 0;
+  padding-right: 10px + 22px;
+  resize: none;
+
+  @media screen and (max-width: 600px) {
+    height: 100px !important; // prevent auto-resize textarea
+    resize: vertical;
+  }
+}
+
+.autosuggest-textarea__suggestions {
+  box-sizing: border-box;
+  display: none;
+  position: absolute;
+  top: 100%;
+  width: 100%;
+  z-index: 99;
+  box-shadow: 4px 4px 6px rgba($base-shadow-color, 0.4);
+  background: $ui-secondary-color;
+  border-radius: 0 0 4px 4px;
+  color: $ui-base-color;
+  font-size: 14px;
+  padding: 6px;
+
+  &.autosuggest-textarea__suggestions--visible {
+    display: block;
+  }
+}
+
+.autosuggest-textarea__suggestions__item {
+  padding: 10px;
+  cursor: pointer;
+  border-radius: 4px;
+
+  &:hover,
+  &:focus,
+  &:active,
+  &.selected {
+    background: darken($ui-secondary-color, 10%);
+  }
+}
+
+.autosuggest-account,
+.autosuggest-emoji {
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  justify-content: flex-start;
+  line-height: 18px;
+  font-size: 14px;
+}
+
+.autosuggest-account-icon,
+.autosuggest-emoji img {
+  display: block;
+  margin-right: 8px;
+  width: 16px;
+  height: 16px;
+}
+
+.autosuggest-account .display-name__account {
+  color: lighten($ui-base-color, 36%);
+}
+
+.character-counter__wrapper {
+  line-height: 36px;
+  margin: 0 16px 0 8px;
+  padding-top: 10px;
+}
+
+.character-counter {
+  cursor: default;
+  font-size: 16px;
+}
+
+.character-counter--over {
+  color: $warning-red;
+}
+
+.getting-started__wrapper {
+  position: relative;
+  overflow-y: auto;
+}
+
+.getting-started__footer {
+  display: flex;
+  flex-direction: column;
+}
+
+.getting-started {
+  box-sizing: border-box;
+  padding-bottom: 235px;
+  background: url('../images/mastodon-getting-started.png') no-repeat 0 100%;
+  flex: 1 0 auto;
+
+  p {
+    color: $ui-secondary-color;
+  }
+
+  a {
+    color: $ui-base-lighter-color;
+  }
+}
+
+.setting-text {
+  color: $ui-primary-color;
+  background: transparent;
+  border: none;
+  border-bottom: 2px solid $ui-primary-color;
+  box-sizing: border-box;
+  display: block;
+  font-family: inherit;
+  margin-bottom: 10px;
+  padding: 7px 0;
+  width: 100%;
+
+  &:focus,
+  &:active {
+    color: $primary-text-color;
+    border-bottom-color: $ui-highlight-color;
+  }
+
+  @media screen and (max-width: 600px) {
+    font-size: 16px;
+  }
+
+  &.light {
+    color: $ui-base-color;
+    border-bottom: 2px solid lighten($ui-base-color, 27%);
+
+    &:focus,
+    &:active {
+      color: $ui-base-color;
+      border-bottom-color: $ui-highlight-color;
+    }
+  }
+}
+
+@import 'boost';
+
+button.icon-button i.fa-retweet {
+  background-position: 0 0;
+  height: 19px;
+  transition: background-position 0.9s steps(10);
+  transition-duration: 0s;
+  vertical-align: middle;
+  width: 22px;
+
+  &::before {
+    display: none !important;
+  }
+}
+
+button.icon-button.active i.fa-retweet {
+  transition-duration: 0.9s;
+  background-position: 0 100%;
+}
+
+.status-card {
+  display: flex;
+  cursor: pointer;
+  font-size: 14px;
+  border: 1px solid lighten($ui-base-color, 8%);
+  border-radius: 4px;
+  color: $ui-base-lighter-color;
+  margin-top: 14px;
+  text-decoration: none;
+  overflow: hidden;
+
+  &:hover {
+    background: lighten($ui-base-color, 8%);
+  }
+}
+
+.status-card-video,
+.status-card-rich,
+.status-card-photo {
+  margin-top: 14px;
+  overflow: hidden;
+
+  iframe {
+    width: 100%;
+    height: auto;
+  }
+}
+
+.status-card-photo {
+  display: block;
+  text-decoration: none;
+
+  img {
+    display: block;
+    width: 100%;
+    height: auto;
+    margin: 0;
+  }
+}
+
+.status-card-video {
+  iframe {
+    width: 100%;
+    height: 100%;
+  }
+}
+
+.status-card__title {
+  display: block;
+  font-weight: 500;
+  margin-bottom: 5px;
+  color: $ui-primary-color;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.status-card__content {
+  flex: 1 1 auto;
+  overflow: hidden;
+  padding: 14px 14px 14px 8px;
+}
+
+.status-card__description {
+  color: $ui-primary-color;
+}
+
+.status-card__host {
+  display: block;
+  margin-top: 5px;
+  font-size: 13px;
+}
+
+.status-card__image {
+  flex: 0 0 100px;
+  background: lighten($ui-base-color, 8%);
+}
+
+.status-card.horizontal {
+  display: block;
+
+  .status-card__image {
+    width: 100%;
+  }
+
+  .status-card__image-image {
+    border-radius: 4px 4px 0 0;
+  }
+}
+
+.status-card__image-image {
+  border-radius: 4px 0 0 4px;
+  display: block;
+  height: auto;
+  margin: 0;
+  width: 100%;
+}
+
+.load-more {
+  display: block;
+  color: $ui-base-lighter-color;
+  background-color: transparent;
+  border: 0;
+  font-size: inherit;
+  text-align: center;
+  line-height: inherit;
+  margin: 0;
+  padding: 15px;
+  width: 100%;
+  clear: both;
+
+  &:hover {
+    background: lighten($ui-base-color, 2%);
+  }
+}
+
+.missing-indicator {
+  text-align: center;
+  font-size: 16px;
+  font-weight: 500;
+  color: lighten($ui-base-color, 16%);
+  background: $ui-base-color;
+  cursor: default;
+  display: flex;
+  flex: 1 1 auto;
+  align-items: center;
+  justify-content: center;
+
+  & > div {
+    background: url('../images/mastodon-not-found.png') no-repeat center -50px;
+    padding-top: 210px;
+    width: 100%;
+  }
+}
+
+.column-header__wrapper {
+  position: relative;
+  flex: 0 0 auto;
+
+  &.active {
+    &::before {
+      display: block;
+      content: "";
+      position: absolute;
+      top: 35px;
+      left: 0;
+      right: 0;
+      margin: 0 auto;
+      width: 60%;
+      pointer-events: none;
+      height: 28px;
+      z-index: 1;
+      background: radial-gradient(ellipse, rgba($ui-highlight-color, 0.23) 0%, rgba($ui-highlight-color, 0) 60%);
+    }
+  }
+}
+
+.column-header {
+  display: flex;
+  padding: 15px;
+  font-size: 16px;
+  background: lighten($ui-base-color, 4%);
+  flex: 0 0 auto;
+  cursor: pointer;
+  position: relative;
+  z-index: 2;
+  outline: 0;
+
+  &.active {
+    box-shadow: 0 1px 0 rgba($ui-highlight-color, 0.3);
+
+    .column-header__icon {
+      color: $ui-highlight-color;
+      text-shadow: 0 0 10px rgba($ui-highlight-color, 0.4);
+    }
+  }
+
+  &:focus,
+  &:active {
+    outline: 0;
+  }
+}
+
+.column-header__buttons {
+  height: 48px;
+  display: flex;
+  margin: -15px;
+  margin-left: 0;
+}
+
+.column-header__button {
+  background: lighten($ui-base-color, 4%);
+  border: 0;
+  color: $ui-primary-color;
+  cursor: pointer;
+  font-size: 16px;
+  padding: 0 15px;
+
+  &:hover {
+    color: lighten($ui-primary-color, 7%);
+  }
+
+  &.active {
+    color: $primary-text-color;
+    background: lighten($ui-base-color, 8%);
+
+    &:hover {
+      color: $primary-text-color;
+      background: lighten($ui-base-color, 8%);
+    }
+  }
+}
+
+.column-header__collapsible {
+  max-height: 70vh;
+  overflow: hidden;
+  overflow-y: auto;
+  color: $ui-primary-color;
+  transition: max-height 150ms ease-in-out, opacity 300ms linear;
+  opacity: 1;
+
+  &.collapsed {
+    max-height: 0;
+    opacity: 0.5;
+  }
+
+  &.animating {
+    overflow-y: hidden;
+  }
+}
+
+.column-header__collapsible-inner {
+  background: lighten($ui-base-color, 8%);
+  padding: 15px;
+}
+
+.column-header__setting-btn {
+  &:hover {
+    color: lighten($ui-primary-color, 4%);
+    text-decoration: underline;
+  }
+}
+
+.column-header__setting-arrows {
+  float: right;
+
+  .column-header__setting-btn {
+    padding: 0 10px;
+
+    &:last-child {
+      padding-right: 0;
+    }
+  }
+}
+
+.column-header__title {
+  display: inline-block;
+  text-overflow: ellipsis;
+  overflow: hidden;
+  white-space: nowrap;
+  flex: 1;
+}
+
+.text-btn {
+  display: inline-block;
+  padding: 0;
+  font-family: inherit;
+  font-size: inherit;
+  color: inherit;
+  border: 0;
+  background: transparent;
+  cursor: pointer;
+}
+
+.column-header__icon {
+  display: inline-block;
+  margin-right: 5px;
+}
+
+.loading-indicator {
+  color: lighten($ui-base-color, 26%);
+  font-size: 12px;
+  font-weight: 400;
+  text-transform: uppercase;
+  overflow: visible;
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+
+  span {
+    display: block;
+    float: left;
+    margin-left: 50%;
+    transform: translateX(-50%);
+    margin: 82px 0 0 50%;
+    white-space: nowrap;
+    animation: loader-label 1.15s infinite cubic-bezier(0.215, 0.610, 0.355, 1.000);
+  }
+}
+
+.loading-indicator__figure {
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  width: 0;
+  height: 0;
+  box-sizing: border-box;
+  border: 0 solid lighten($ui-base-color, 26%);
+  border-radius: 50%;
+  animation: loader-figure 1.15s infinite cubic-bezier(0.215, 0.610, 0.355, 1.000);
+}
+
+@keyframes loader-figure {
+  0% {
+    width: 0;
+    height: 0;
+    background-color: lighten($ui-base-color, 26%);
+  }
+
+  29% {
+    background-color: lighten($ui-base-color, 26%);
+  }
+
+  30% {
+    width: 42px;
+    height: 42px;
+    background-color: transparent;
+    border-width: 21px;
+    opacity: 1;
+  }
+
+  100% {
+    width: 42px;
+    height: 42px;
+    border-width: 0;
+    opacity: 0;
+    background-color: transparent;
+  }
+}
+
+@keyframes loader-label {
+  0% { opacity: 0.25; }
+  30% { opacity: 1; }
+  100% { opacity: 0.25; }
+}
+
+.video-error-cover {
+  align-items: center;
+  background: $base-overlay-background;
+  color: $primary-text-color;
+  cursor: pointer;
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  justify-content: center;
+  margin-top: 8px;
+  position: relative;
+  text-align: center;
+  z-index: 100;
+}
+
+.media-spoiler {
+  background: $base-overlay-background;
+  color: $ui-primary-color;
+  border: 0;
+  width: 100%;
+  height: 100%;
+
+  &:hover,
+  &:active,
+  &:focus {
+    color: lighten($ui-primary-color, 8%);
+  }
+}
+
+.media-spoiler__warning {
+  display: block;
+  font-size: 14px;
+}
+
+.media-spoiler__trigger {
+  display: block;
+  font-size: 11px;
+  font-weight: 500;
+}
+
+.spoiler-button {
+  display: none;
+  left: 4px;
+  position: absolute;
+  text-shadow: 0 1px 1px $base-shadow-color, 1px 0 1px $base-shadow-color;
+  top: 4px;
+  z-index: 100;
+
+  &.spoiler-button--visible {
+    display: block;
+  }
+}
+
+.modal-container--preloader {
+  background: lighten($ui-base-color, 8%);
+}
+
+.account--panel {
+  background: lighten($ui-base-color, 4%);
+  border-top: 1px solid lighten($ui-base-color, 8%);
+  border-bottom: 1px solid lighten($ui-base-color, 8%);
+  display: flex;
+  flex-direction: row;
+  padding: 10px 0;
+}
+
+.account--panel__button,
+.detailed-status__button {
+  flex: 1 1 auto;
+  text-align: center;
+}
+
+.column-settings__outer {
+  background: lighten($ui-base-color, 8%);
+  padding: 15px;
+}
+
+.column-settings__section {
+  color: $ui-primary-color;
+  cursor: default;
+  display: block;
+  font-weight: 500;
+  margin-bottom: 10px;
+}
+
+.column-settings__row {
+  .text-btn {
+    margin-bottom: 15px;
+  }
+}
+
+.modal-container__nav {
+  align-items: center;
+  background: rgba($base-overlay-background, 0.5);
+  box-sizing: border-box;
+  border: 0;
+  color: $primary-text-color;
+  cursor: pointer;
+  display: flex;
+  font-size: 24px;
+  height: 100%;
+  padding: 30px 15px;
+  position: absolute;
+  top: 0;
+}
+
+.modal-container__nav--left {
+  left: -61px;
+}
+
+.modal-container__nav--right {
+  right: -61px;
+}
+
+.account--follows-info {
+  color: $primary-text-color;
+  position: absolute;
+  top: 10px;
+  left: 10px;
+  opacity: 0.7;
+  display: inline-block;
+  vertical-align: top;
+  background-color: rgba($base-overlay-background, 0.4);
+  text-transform: uppercase;
+  font-size: 11px;
+  font-weight: 500;
+  padding: 4px;
+  border-radius: 4px;
+}
+
+.account--action-button {
+  position: absolute;
+  top: 10px;
+  right: 20px;
+}
+
+.setting-toggle {
+  display: block;
+  line-height: 24px;
+}
+
+.setting-toggle__label,
+.setting-meta__label {
+  color: $ui-primary-color;
+  display: inline-block;
+  margin-bottom: 14px;
+  margin-left: 8px;
+  vertical-align: middle;
+}
+
+.setting-meta__label {
+  color: $ui-primary-color;
+  float: right;
+}
+
+.empty-column-indicator,
+.error-column {
+  color: lighten($ui-base-color, 20%);
+  background: $ui-base-color;
+  text-align: center;
+  padding: 20px;
+  font-size: 15px;
+  font-weight: 400;
+  cursor: default;
+  display: flex;
+  flex: 1 1 auto;
+  align-items: center;
+  justify-content: center;
+  @supports(display: grid) { // hack to fix Chrome <57
+    contain: strict;
+  }
+
+  a {
+    color: $ui-highlight-color;
+    text-decoration: none;
+
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+}
+
+.error-column {
+  flex-direction: column;
+}
+
+@keyframes heartbeat {
+  from {
+    transform: scale(1);
+    transform-origin: center center;
+    animation-timing-function: ease-out;
+  }
+
+  10% {
+    transform: scale(0.91);
+    animation-timing-function: ease-in;
+  }
+
+  17% {
+    transform: scale(0.98);
+    animation-timing-function: ease-out;
+  }
+
+  33% {
+    transform: scale(0.87);
+    animation-timing-function: ease-in;
+  }
+
+  45% {
+    transform: scale(1);
+    animation-timing-function: ease-out;
+  }
+}
+
+.pulse-loading {
+  animation: heartbeat 1.5s ease-in-out infinite both;
+}
+
+.emoji-picker-dropdown__menu {
+  background: $simple-background-color;
+  position: absolute;
+  box-shadow: 4px 4px 6px rgba($base-shadow-color, 0.4);
+  border-radius: 4px;
+  margin-top: 5px;
+
+  .emoji-mart-scroll {
+    transition: opacity 200ms ease;
+  }
+
+  &.selecting .emoji-mart-scroll {
+    opacity: 0.5;
+  }
+}
+
+.emoji-picker-dropdown__modifiers {
+  position: absolute;
+  top: 60px;
+  right: 11px;
+  cursor: pointer;
+}
+
+.emoji-picker-dropdown__modifiers__menu {
+  position: absolute;
+  z-index: 4;
+  top: -4px;
+  left: -8px;
+  background: $simple-background-color;
+  border-radius: 4px;
+  box-shadow: 1px 2px 6px rgba($base-shadow-color, 0.2);
+  overflow: hidden;
+
+  button {
+    display: block;
+    cursor: pointer;
+    border: 0;
+    padding: 4px 8px;
+    background: transparent;
+
+    &:hover,
+    &:focus,
+    &:active {
+      background: rgba($ui-secondary-color, 0.4);
+    }
+  }
+
+  .emoji-mart-emoji {
+    height: 22px;
+  }
+}
+
+.emoji-mart-emoji {
+  span {
+    background-repeat: no-repeat;
+  }
+}
+
+.upload-area {
+  align-items: center;
+  background: rgba($base-overlay-background, 0.8);
+  display: flex;
+  height: 100%;
+  justify-content: center;
+  left: 0;
+  opacity: 0;
+  position: absolute;
+  top: 0;
+  visibility: hidden;
+  width: 100%;
+  z-index: 2000;
+
+  * {
+    pointer-events: none;
+  }
+}
+
+.upload-area__drop {
+  width: 320px;
+  height: 160px;
+  display: flex;
+  box-sizing: border-box;
+  position: relative;
+  padding: 8px;
+}
+
+.upload-area__background {
+  position: absolute;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: -1;
+  border-radius: 4px;
+  background: $ui-base-color;
+  box-shadow: 0 0 5px rgba($base-shadow-color, 0.2);
+}
+
+.upload-area__content {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: $ui-secondary-color;
+  font-size: 18px;
+  font-weight: 500;
+  border: 2px dashed $ui-base-lighter-color;
+  border-radius: 4px;
+}
+
+.upload-progress {
+  padding: 10px;
+  color: $ui-base-lighter-color;
+  overflow: hidden;
+  display: flex;
+
+  .fa {
+    font-size: 34px;
+    margin-right: 10px;
+  }
+
+  span {
+    font-size: 12px;
+    text-transform: uppercase;
+    font-weight: 500;
+    display: block;
+  }
+}
+
+.upload-progess__message {
+  flex: 1 1 auto;
+}
+
+.upload-progress__backdrop {
+  width: 100%;
+  height: 6px;
+  border-radius: 6px;
+  background: $ui-base-lighter-color;
+  position: relative;
+  margin-top: 5px;
+}
+
+.upload-progress__tracker {
+  position: absolute;
+  left: 0;
+  top: 0;
+  height: 6px;
+  background: $ui-highlight-color;
+  border-radius: 6px;
+}
+
+.emoji-button {
+  display: block;
+  font-size: 24px;
+  line-height: 24px;
+  margin-left: 2px;
+  width: 24px;
+  outline: 0;
+  cursor: pointer;
+
+  &:active,
+  &:focus {
+    outline: 0 !important;
+  }
+
+  img {
+    filter: grayscale(100%);
+    opacity: 0.8;
+    display: block;
+    margin: 0;
+    width: 22px;
+    height: 22px;
+    margin-top: 2px;
+  }
+
+  &:hover,
+  &:active,
+  &:focus {
+    img {
+      opacity: 1;
+      filter: none;
+    }
+  }
+}
+
+.dropdown--active .emoji-button img {
+  opacity: 1;
+  filter: none;
+}
+
+.privacy-dropdown__dropdown {
+  position: absolute;
+  background: $simple-background-color;
+  box-shadow: 2px 4px 15px rgba($base-shadow-color, 0.4);
+  border-radius: 4px;
+  margin-left: 40px;
+  overflow: hidden;
+}
+
+.privacy-dropdown__option {
+  color: $ui-base-color;
+  padding: 10px;
+  cursor: pointer;
+  display: flex;
+
+  &:hover,
+  &.active {
+    background: $ui-highlight-color;
+    color: $primary-text-color;
+
+    .privacy-dropdown__option__content {
+      color: $primary-text-color;
+
+      strong {
+        color: $primary-text-color;
+      }
+    }
+  }
+
+  &.active:hover {
+    background: lighten($ui-highlight-color, 4%);
+  }
+}
+
+.privacy-dropdown__option__icon {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  margin-right: 10px;
+}
+
+.privacy-dropdown__option__content {
+  flex: 1 1 auto;
+  color: darken($ui-primary-color, 24%);
+
+  strong {
+    font-weight: 500;
+    display: block;
+    color: $ui-base-color;
+  }
+}
+
+.privacy-dropdown.active {
+  .privacy-dropdown__value {
+    background: $simple-background-color;
+    border-radius: 4px 4px 0 0;
+    box-shadow: 0 -4px 4px rgba($base-shadow-color, 0.1);
+
+    .icon-button {
+      transition: none;
+    }
+
+    &.active {
+      background: $ui-highlight-color;
+
+      .icon-button {
+        color: $primary-text-color;
+      }
+    }
+  }
+
+  .privacy-dropdown__dropdown {
+    display: block;
+    box-shadow: 2px 4px 6px rgba($base-shadow-color, 0.1);
+  }
+}
+
+.search {
+  position: relative;
+}
+
+.search__input {
+  outline: 0;
+  box-sizing: border-box;
+  display: block;
+  width: 100%;
+  border: none;
+  padding: 10px;
+  padding-right: 30px;
+  font-family: inherit;
+  background: $ui-base-color;
+  color: $ui-primary-color;
+  font-size: 14px;
+  margin: 0;
+
+  &::-moz-focus-inner {
+    border: 0;
+  }
+
+  &::-moz-focus-inner,
+  &:focus,
+  &:active {
+    outline: 0 !important;
+  }
+
+  &:focus {
+    background: lighten($ui-base-color, 4%);
+  }
+
+  @media screen and (max-width: 600px) {
+    font-size: 16px;
+  }
+}
+
+.search__icon {
+  .fa {
+    position: absolute;
+    top: 10px;
+    right: 10px;
+    z-index: 2;
+    display: inline-block;
+    opacity: 0;
+    transition: all 100ms linear;
+    font-size: 18px;
+    width: 18px;
+    height: 18px;
+    color: $ui-secondary-color;
+    cursor: default;
+    pointer-events: none;
+
+    &.active {
+      pointer-events: auto;
+      opacity: 0.3;
+    }
+  }
+
+  .fa-search {
+    transform: rotate(90deg);
+
+    &.active {
+      pointer-events: none;
+      transform: rotate(0deg);
+    }
+  }
+
+  .fa-times-circle {
+    top: 11px;
+    transform: rotate(0deg);
+    cursor: pointer;
+
+    &.active {
+      transform: rotate(90deg);
+    }
+
+    &:hover {
+      color: $primary-text-color;
+    }
+  }
+}
+
+.search-results__header {
+  color: $ui-base-lighter-color;
+  background: lighten($ui-base-color, 2%);
+  border-bottom: 1px solid darken($ui-base-color, 4%);
+  padding: 15px 10px;
+  font-size: 14px;
+  font-weight: 500;
+}
+
+.search-results__hashtag {
+  display: block;
+  padding: 10px;
+  color: $ui-secondary-color;
+  text-decoration: none;
+
+  &:hover,
+  &:active,
+  &:focus {
+    color: lighten($ui-secondary-color, 4%);
+    text-decoration: underline;
+  }
+}
+
+.modal-root {
+  transition: opacity 0.3s linear;
+  will-change: opacity;
+  z-index: 9999;
+}
+
+.modal-root__overlay {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: rgba($base-overlay-background, 0.7);
+}
+
+.modal-root__container {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  align-content: space-around;
+  z-index: 9999;
+  pointer-events: none;
+  user-select: none;
+}
+
+.modal-root__modal {
+  pointer-events: auto;
+  display: flex;
+  z-index: 9999;
+}
+
+.media-modal {
+  max-width: 80vw;
+  max-height: 80vh;
+  position: relative;
+
+  .extended-video-player,
+  img,
+  canvas,
+  video {
+    max-width: 80vw;
+    max-height: 80vh;
+    width: auto;
+    height: auto;
+    margin: auto;
+  }
+
+  .extended-video-player,
+  video {
+    display: flex;
+    width: 80vw;
+    height: 80vh;
+  }
+
+  img,
+  canvas {
+    display: block;
+    background: url('../images/void.png') repeat;
+    object-fit: contain;
+  }
+
+  .react-swipeable-view-container {
+    max-width: 80vw;
+  }
+}
+
+.media-modal__content {
+  background: $base-overlay-background;
+}
+
+.media-modal__pagination {
+  width: 100%;
+  text-align: center;
+  position: absolute;
+  left: 0;
+  bottom: -40px;
+}
+
+.media-modal__page-dot {
+  display: inline-block;
+}
+
+.media-modal__button {
+  background-color: $white;
+  height: 12px;
+  width: 12px;
+  border-radius: 6px;
+  margin: 10px;
+  padding: 0;
+  border: 0;
+  font-size: 0;
+}
+
+.media-modal__button--active {
+  background-color: $ui-highlight-color;
+}
+
+.media-modal__close {
+  position: absolute;
+  right: 4px;
+  top: 4px;
+  z-index: 100;
+}
+
+.onboarding-modal,
+.error-modal,
+.embed-modal {
+  background: $ui-secondary-color;
+  color: $ui-base-color;
+  border-radius: 8px;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+}
+
+.onboarding-modal__pager {
+  height: 80vh;
+  width: 80vw;
+  max-width: 520px;
+  max-height: 420px;
+
+  .react-swipeable-view-container > div {
+    width: 100%;
+    height: 100%;
+    box-sizing: border-box;
+    padding: 25px;
+    display: none;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    display: flex;
+    user-select: text;
+  }
+}
+
+.error-modal__body {
+  height: 80vh;
+  width: 80vw;
+  max-width: 520px;
+  max-height: 420px;
+  position: relative;
+
+  & > div {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    box-sizing: border-box;
+    padding: 25px;
+    display: none;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    display: flex;
+    opacity: 0;
+    user-select: text;
+  }
+}
+
+.error-modal__body {
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+  text-align: center;
+}
+
+@media screen and (max-width: 550px) {
+  .onboarding-modal {
+    width: 100%;
+    height: 100%;
+    border-radius: 0;
+  }
+
+  .onboarding-modal__pager {
+    width: 100%;
+    height: auto;
+    max-width: none;
+    max-height: none;
+    flex: 1 1 auto;
+  }
+}
+
+.onboarding-modal__paginator,
+.error-modal__footer {
+  flex: 0 0 auto;
+  background: darken($ui-secondary-color, 8%);
+  display: flex;
+  padding: 25px;
+
+  & > div {
+    min-width: 33px;
+  }
+
+  .onboarding-modal__nav,
+  .error-modal__nav {
+    color: darken($ui-secondary-color, 34%);
+    background-color: transparent;
+    border: 0;
+    font-size: 14px;
+    font-weight: 500;
+    padding: 0;
+    line-height: inherit;
+    height: auto;
+
+    &:hover,
+    &:focus,
+    &:active {
+      color: darken($ui-secondary-color, 38%);
+    }
+
+    &.onboarding-modal__done,
+    &.onboarding-modal__next {
+      color: $ui-highlight-color;
+    }
+  }
+}
+
+.error-modal__footer {
+  justify-content: center;
+}
+
+.onboarding-modal__dots {
+  flex: 1 1 auto;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.onboarding-modal__dot {
+  width: 14px;
+  height: 14px;
+  border-radius: 14px;
+  background: darken($ui-secondary-color, 16%);
+  margin: 0 3px;
+  cursor: pointer;
+
+  &:hover {
+    background: darken($ui-secondary-color, 18%);
+  }
+
+  &.active {
+    cursor: default;
+    background: darken($ui-secondary-color, 24%);
+  }
+}
+
+.onboarding-modal__page__wrapper {
+  pointer-events: none;
+
+  &.onboarding-modal__page__wrapper--active {
+    pointer-events: auto;
+  }
+}
+
+.onboarding-modal__page {
+  cursor: default;
+  line-height: 21px;
+
+  h1 {
+    font-size: 18px;
+    font-weight: 500;
+    color: $ui-base-color;
+    margin-bottom: 20px;
+  }
+
+  a {
+    color: $ui-highlight-color;
+
+    &:hover,
+    &:focus,
+    &:active {
+      color: lighten($ui-highlight-color, 4%);
+    }
+  }
+
+  p {
+    font-size: 16px;
+    color: lighten($ui-base-color, 8%);
+    margin-top: 10px;
+    margin-bottom: 10px;
+
+    &:last-child {
+      margin-bottom: 0;
+    }
+
+    strong {
+      font-weight: 500;
+      background: $ui-base-color;
+      color: $ui-secondary-color;
+      border-radius: 4px;
+      font-size: 14px;
+      padding: 3px 6px;
+    }
+  }
+}
+
+.onboarding-modal__page-one {
+  display: flex;
+  align-items: center;
+}
+
+.onboarding-modal__page-one__elephant-friend {
+  background: url('../images/elephant-friend-1.png') no-repeat center center / contain;
+  width: 155px;
+  height: 193px;
+  margin-right: 15px;
+}
+
+@media screen and (max-width: 400px) {
+  .onboarding-modal__page-one {
+    flex-direction: column;
+    align-items: normal;
+  }
+
+  .onboarding-modal__page-one__elephant-friend {
+    width: 100%;
+    height: 30vh;
+    max-height: 160px;
+    margin-bottom: 5vh;
+  }
+}
+
+.onboarding-modal__page-two,
+.onboarding-modal__page-three,
+.onboarding-modal__page-four,
+.onboarding-modal__page-five {
+  p {
+    text-align: left;
+  }
+
+  .figure {
+    background: darken($ui-base-color, 8%);
+    color: $ui-secondary-color;
+    margin-bottom: 20px;
+    border-radius: 4px;
+    padding: 10px;
+    text-align: center;
+    font-size: 14px;
+    box-shadow: 1px 2px 6px rgba($base-shadow-color, 0.3);
+
+    .onboarding-modal__image {
+      border-radius: 4px;
+      margin-bottom: 10px;
+    }
+
+    &.non-interactive {
+      pointer-events: none;
+      text-align: left;
+    }
+  }
+}
+
+.onboarding-modal__page-four__columns {
+  .row {
+    display: flex;
+    margin-bottom: 20px;
+
+    & > div {
+      flex: 1 1 0;
+      margin: 0 10px;
+
+      &:first-child {
+        margin-left: 0;
+      }
+
+      &:last-child {
+        margin-right: 0;
+      }
+
+      p {
+        text-align: center;
+      }
+    }
+
+    &:last-child {
+      margin-bottom: 0;
+    }
+  }
+
+  .column-header {
+    color: $primary-text-color;
+  }
+}
+
+@media screen and (max-width: 320px) and (max-height: 600px) {
+  .onboarding-modal__page p {
+    font-size: 14px;
+    line-height: 20px;
+  }
+
+  .onboarding-modal__page-two .figure,
+  .onboarding-modal__page-three .figure,
+  .onboarding-modal__page-four .figure,
+  .onboarding-modal__page-five .figure {
+    font-size: 12px;
+    margin-bottom: 10px;
+  }
+
+  .onboarding-modal__page-four__columns .row {
+    margin-bottom: 10px;
+  }
+
+  .onboarding-modal__page-four__columns .column-header {
+    padding: 5px;
+    font-size: 12px;
+  }
+}
+
+.onboarding-modal__image {
+  border-radius: 8px;
+  width: 70vw;
+  max-width: 450px;
+  max-height: auto;
+  display: block;
+  margin: auto;
+  margin-bottom: 20px;
+}
+
+.onboard-sliders {
+  display: inline-block;
+  max-width: 30px;
+  max-height: auto;
+  margin-left: 10px;
+}
+
+.boost-modal,
+.confirmation-modal,
+.report-modal,
+.actions-modal,
+.mute-modal {
+  background: lighten($ui-secondary-color, 8%);
+  color: $ui-base-color;
+  border-radius: 8px;
+  overflow: hidden;
+  max-width: 90vw;
+  width: 480px;
+  position: relative;
+  flex-direction: column;
+
+  .status__display-name {
+    display: block;
+    max-width: 100%;
+    padding-right: 25px;
+  }
+
+  .status__avatar {
+    height: 28px;
+    left: 10px;
+    position: absolute;
+    top: 10px;
+    width: 48px;
+  }
+}
+
+.actions-modal {
+  .status {
+    background: $white;
+    border-bottom-color: $ui-secondary-color;
+    padding-top: 10px;
+    padding-bottom: 10px;
+  }
+
+  .dropdown-menu__separator {
+    border-bottom-color: $ui-secondary-color;
+  }
+}
+
+.boost-modal__container {
+  overflow-x: scroll;
+  padding: 10px;
+
+  .status {
+    user-select: text;
+    border-bottom: 0;
+  }
+}
+
+.boost-modal__action-bar,
+.confirmation-modal__action-bar,
+.mute-modal__action-bar,
+.report-modal__action-bar {
+  display: flex;
+  justify-content: space-between;
+  background: $ui-secondary-color;
+  padding: 10px;
+  line-height: 36px;
+
+  & > div {
+    flex: 1 1 auto;
+    text-align: right;
+    color: lighten($ui-base-color, 33%);
+    padding-right: 10px;
+  }
+
+  .button {
+    flex: 0 0 auto;
+  }
+}
+
+.boost-modal__status-header {
+  font-size: 15px;
+}
+
+.boost-modal__status-time {
+  float: right;
+  font-size: 14px;
+}
+
+.confirmation-modal {
+  max-width: 85vw;
+
+  @media screen and (min-width: 480px) {
+    max-width: 380px;
+  }
+}
+
+.mute-modal {
+  line-height: 24px;
+}
+
+.mute-modal .react-toggle {
+  vertical-align: middle;
+}
+
+.report-modal__statuses,
+.report-modal__comment {
+  padding: 10px;
+}
+
+.report-modal__statuses {
+  min-height: 20vh;
+  max-height: 40vh;
+  overflow-y: auto;
+  overflow-x: hidden;
+}
+
+.report-modal__comment {
+  .setting-text {
+    margin-top: 10px;
+  }
+}
+
+.actions-modal {
+  .status {
+    overflow-y: auto;
+    max-height: 300px;
+  }
+
+  max-height: 80vh;
+  max-width: 80vw;
+
+  .actions-modal__item-label {
+    font-weight: 500;
+  }
+
+  ul {
+    overflow-y: auto;
+    flex-shrink: 0;
+
+    li:empty {
+      margin: 0;
+    }
+
+    li:not(:empty) {
+      a {
+        color: $ui-base-color;
+        display: flex;
+        padding: 12px 16px;
+        font-size: 15px;
+        align-items: center;
+        text-decoration: none;
+
+        &,
+        button {
+          transition: none;
+        }
+
+        &.active,
+        &:hover,
+        &:active,
+        &:focus {
+          &,
+          button {
+            background: $ui-highlight-color;
+            color: $primary-text-color;
+          }
+        }
+
+        button:first-child {
+          margin-right: 10px;
+        }
+      }
+    }
+  }
+}
+
+.confirmation-modal__action-bar,
+.mute-modal__action-bar {
+  .confirmation-modal__cancel-button,
+  .mute-modal__cancel-button {
+    background-color: transparent;
+    color: darken($ui-secondary-color, 34%);
+    font-size: 14px;
+    font-weight: 500;
+
+    &:hover,
+    &:focus,
+    &:active {
+      color: darken($ui-secondary-color, 38%);
+    }
+  }
+}
+
+.confirmation-modal__container,
+.mute-modal__container,
+.report-modal__target {
+  padding: 30px;
+  font-size: 16px;
+  text-align: center;
+
+  strong {
+    font-weight: 500;
+  }
+}
+
+.loading-bar {
+  background-color: $ui-highlight-color;
+  height: 3px;
+  position: absolute;
+  top: 0;
+  left: 0;
+}
+
+.media-gallery__gifv__label {
+  display: block;
+  position: absolute;
+  color: $primary-text-color;
+  background: rgba($base-overlay-background, 0.5);
+  bottom: 6px;
+  left: 6px;
+  padding: 2px 6px;
+  border-radius: 2px;
+  font-size: 11px;
+  font-weight: 600;
+  z-index: 1;
+  pointer-events: none;
+  opacity: 0.9;
+  transition: opacity 0.1s ease;
+}
+
+.media-gallery__gifv {
+  &.autoplay {
+    .media-gallery__gifv__label {
+      display: none;
+    }
+  }
+
+  &:hover {
+    .media-gallery__gifv__label {
+      opacity: 1;
+    }
+  }
+}
+
+.attachment-list {
+  display: flex;
+  font-size: 14px;
+  border: 1px solid lighten($ui-base-color, 8%);
+  border-radius: 4px;
+  margin-top: 14px;
+  overflow: hidden;
+}
+
+.attachment-list__icon {
+  flex: 0 0 auto;
+  color: $ui-base-lighter-color;
+  padding: 8px 18px;
+  cursor: default;
+  border-right: 1px solid lighten($ui-base-color, 8%);
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  font-size: 26px;
+
+  .fa {
+    display: block;
+  }
+}
+
+.attachment-list__list {
+  list-style: none;
+  padding: 4px 0;
+  padding-left: 8px;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+
+  li {
+    display: block;
+    padding: 4px 0;
+  }
+
+  a {
+    text-decoration: none;
+    color: $ui-base-lighter-color;
+    font-weight: 500;
+
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+}
+
+/* Media Gallery */
+.media-gallery {
+  box-sizing: border-box;
+  margin-top: 8px;
+  overflow: hidden;
+  position: relative;
+  width: 100%;
+}
+
+.media-gallery__item {
+  border: none;
+  box-sizing: border-box;
+  display: block;
+  float: left;
+  position: relative;
+
+  &.standalone {
+    .media-gallery__item-gifv-thumbnail {
+      transform: none;
+    }
+  }
+}
+
+.media-gallery__item-thumbnail {
+  cursor: zoom-in;
+  display: block;
+  text-decoration: none;
+  height: 100%;
+  line-height: 0;
+
+  &,
+  img {
+    width: 100%;
+    height: 100%;
+    object-fit: cover;
+  }
+}
+
+.media-gallery__gifv {
+  height: 100%;
+  overflow: hidden;
+  position: relative;
+  width: 100%;
+}
+
+.media-gallery__item-gifv-thumbnail {
+  cursor: zoom-in;
+  height: 100%;
+  object-fit: cover;
+  position: relative;
+  top: 50%;
+  transform: translateY(-50%);
+  width: 100%;
+  z-index: 1;
+}
+
+.media-gallery__item-thumbnail-label {
+  clip: rect(1px 1px 1px 1px); /* IE6, IE7 */
+  clip: rect(1px, 1px, 1px, 1px);
+  overflow: hidden;
+  position: absolute;
+}
+/* End Media Gallery */
+
+/* Status Video Player */
+.status__video-player {
+  background: $base-overlay-background;
+  box-sizing: border-box;
+  cursor: default; /* May not be needed */
+  margin-top: 8px;
+  overflow: hidden;
+  position: relative;
+}
+
+.status__video-player-video {
+  height: 100%;
+  object-fit: cover;
+  position: relative;
+  top: 50%;
+  transform: translateY(-50%);
+  width: 100%;
+  z-index: 1;
+}
+
+.status__video-player-expand,
+.status__video-player-mute {
+  color: $primary-text-color;
+  opacity: 0.8;
+  position: absolute;
+  right: 4px;
+  text-shadow: 0 1px 1px $base-shadow-color, 1px 0 1px $base-shadow-color;
+}
+
+.status__video-player-spoiler {
+  display: none;
+  color: $primary-text-color;
+  left: 4px;
+  position: absolute;
+  text-shadow: 0 1px 1px $base-shadow-color, 1px 0 1px $base-shadow-color;
+  top: 4px;
+  z-index: 100;
+
+  &.status__video-player-spoiler--visible {
+    display: block;
+  }
+}
+
+.status__video-player-expand {
+  bottom: 4px;
+  z-index: 100;
+}
+
+.status__video-player-mute {
+  top: 4px;
+  z-index: 5;
+}
+
+.video-player {
+  overflow: hidden;
+  position: relative;
+  background: $base-shadow-color;
+  max-width: 100%;
+
+  video {
+    height: 100%;
+    width: 100%;
+    z-index: 1;
+  }
+
+  &.fullscreen {
+    width: 100% !important;
+    height: 100% !important;
+    margin: 0;
+
+    video {
+      max-width: 100% !important;
+      max-height: 100% !important;
+    }
+  }
+
+  &.inline {
+    video {
+      object-fit: cover;
+      position: relative;
+      top: 50%;
+      transform: translateY(-50%);
+    }
+  }
+
+  &__controls {
+    position: absolute;
+    z-index: 2;
+    bottom: 0;
+    left: 0;
+    right: 0;
+    box-sizing: border-box;
+    background: linear-gradient(0deg, rgba($base-shadow-color, 0.8) 0, rgba($base-shadow-color, 0.35) 60%, transparent);
+    padding: 0 10px;
+    opacity: 0;
+    transition: opacity .1s ease;
+
+    &.active {
+      opacity: 1;
+    }
+  }
+
+  &.inactive {
+    video,
+    .video-player__controls {
+      visibility: hidden;
+    }
+  }
+
+  &__spoiler {
+    display: none;
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    z-index: 4;
+    border: 0;
+    background: $base-shadow-color;
+    color: $ui-primary-color;
+    transition: none;
+    pointer-events: none;
+
+    &.active {
+      display: block;
+      pointer-events: auto;
+
+      &:hover,
+      &:active,
+      &:focus {
+        color: lighten($ui-primary-color, 8%);
+      }
+    }
+
+    &__title {
+      display: block;
+      font-size: 14px;
+    }
+
+    &__subtitle {
+      display: block;
+      font-size: 11px;
+      font-weight: 500;
+    }
+  }
+
+  &__buttons {
+    padding-bottom: 10px;
+    font-size: 16px;
+
+    &.left {
+      float: left;
+
+      button {
+        padding-right: 10px;
+      }
+    }
+
+    &.right {
+      float: right;
+
+      button {
+        padding-left: 10px;
+      }
+    }
+
+    button {
+      background: transparent;
+      padding: 0;
+      border: 0;
+      color: $white;
+
+      &:active,
+      &:hover,
+      &:focus {
+        color: $ui-highlight-color;
+      }
+    }
+  }
+
+  &__seek {
+    cursor: pointer;
+    height: 24px;
+    position: relative;
+
+    &::before {
+      content: "";
+      width: 100%;
+      background: rgba($white, 0.35);
+      display: block;
+      position: absolute;
+      height: 4px;
+      top: 10px;
+    }
+
+    &__progress,
+    &__buffer {
+      display: block;
+      position: absolute;
+      height: 4px;
+      top: 10px;
+      background: $ui-highlight-color;
+    }
+
+    &__buffer {
+      background: rgba($white, 0.2);
+    }
+
+    &__handle {
+      position: absolute;
+      z-index: 3;
+      opacity: 0;
+      border-radius: 50%;
+      width: 12px;
+      height: 12px;
+      top: 6px;
+      margin-left: -6px;
+      transition: opacity .1s ease;
+      background: $ui-highlight-color;
+      pointer-events: none;
+
+      &.active {
+        opacity: 1;
+      }
+    }
+
+    &:hover {
+      .video-player__seek__handle {
+        opacity: 1;
+      }
+    }
+  }
+}
+
+.media-spoiler-video {
+  background-size: cover;
+  background-repeat: no-repeat;
+  background-position: center;
+  cursor: pointer;
+  margin-top: 8px;
+  position: relative;
+  border: 0;
+  display: block;
+}
+
+.media-spoiler-video-play-icon {
+  border-radius: 100px;
+  color: rgba($primary-text-color, 0.8);
+  font-size: 36px;
+  left: 50%;
+  padding: 5px;
+  position: absolute;
+  top: 50%;
+  transform: translate(-50%, -50%);
+}
+/* End Video Player */
+
+.account-gallery__container {
+  margin: -2px;
+  padding: 4px;
+  display: flex;
+  flex-wrap: wrap;
+}
+
+.account-gallery__item {
+  flex: 1 1 auto;
+  width: calc(100% / 3 - 4px);
+  height: 95px;
+  margin: 2px;
+
+  a {
+    display: block;
+    width: 100%;
+    height: 100%;
+    background-color: $base-overlay-background;
+    background-size: cover;
+    background-position: center;
+    position: relative;
+    color: inherit;
+    text-decoration: none;
+
+    &:hover,
+    &:active,
+    &:focus {
+      outline: 0;
+    }
+  }
+}
+
+.account-section-headline {
+  color: $ui-base-lighter-color;
+  background: lighten($ui-base-color, 2%);
+  border-bottom: 1px solid lighten($ui-base-color, 4%);
+  padding: 15px 10px;
+  font-size: 14px;
+  font-weight: 500;
+  position: relative;
+  cursor: default;
+
+  &::before,
+  &::after {
+    display: block;
+    content: "";
+    position: absolute;
+    bottom: 0;
+    left: 18px;
+    width: 0;
+    height: 0;
+    border-style: solid;
+    border-width: 0 10px 10px;
+    border-color: transparent transparent lighten($ui-base-color, 4%);
+  }
+
+  &::after {
+    bottom: -1px;
+    border-color: transparent transparent $ui-base-color;
+  }
+}
+
+::-webkit-scrollbar-thumb {
+  border-radius: 0;
+}
+
+.search-popout {
+  background: $simple-background-color;
+  border-radius: 4px;
+  padding: 10px 14px;
+  padding-bottom: 14px;
+  margin-top: 10px;
+  color: $ui-primary-color;
+  box-shadow: 2px 4px 15px rgba($base-shadow-color, 0.4);
+
+  h4 {
+    text-transform: uppercase;
+    color: $ui-primary-color;
+    font-size: 13px;
+    font-weight: 500;
+    margin-bottom: 10px;
+  }
+
+  li {
+    padding: 4px 0;
+  }
+
+  ul {
+    margin-bottom: 10px;
+  }
+
+  em {
+    font-weight: 500;
+    color: $ui-base-color;
+  }
+}
+
+noscript {
+  text-align: center;
+
+  img {
+    width: 200px;
+    opacity: 0.5;
+    animation: flicker 4s infinite;
+  }
+
+  div {
+    font-size: 14px;
+    margin: 30px auto;
+    color: $ui-secondary-color;
+    max-width: 400px;
+
+    a {
+      color: $ui-highlight-color;
+      text-decoration: underline;
+
+      &:hover {
+        text-decoration: none;
+      }
+    }
+  }
+}
+
+@keyframes flicker {
+  0% { opacity: 1; }
+  30% { opacity: 0.75; }
+  100% { opacity: 1; }
+}
+
+@media screen and (max-width: 630px) and (max-height: 400px) {
+  $duration: 400ms;
+  $delay: 100ms;
+
+  .tabs-bar,
+  .search {
+    will-change: margin-top;
+    transition: margin-top $duration $delay;
+  }
+
+  .navigation-bar {
+    will-change: padding-bottom;
+    transition: padding-bottom $duration $delay;
+  }
+
+  .navigation-bar {
+    & > a:first-child {
+      will-change: margin-top, margin-left, width;
+      transition: margin-top $duration $delay, margin-left $duration ($duration + $delay);
+    }
+
+    & > .navigation-bar__profile-edit {
+      will-change: margin-top;
+      transition: margin-top $duration $delay;
+    }
+
+    & > .icon-button {
+      will-change: opacity;
+      transition: opacity $duration $delay;
+    }
+  }
+
+  .is-composing {
+    .tabs-bar,
+    .search {
+      margin-top: -50px;
+    }
+
+    .navigation-bar {
+      padding-bottom: 0;
+
+      & > a:first-child {
+        margin-top: -50px;
+        margin-left: -40px;
+      }
+
+      .navigation-bar__profile {
+        padding-top: 2px;
+      }
+
+      .navigation-bar__profile-edit {
+        position: absolute;
+        margin-top: -50px;
+      }
+
+      .icon-button {
+        pointer-events: auto;
+        opacity: 1;
+      }
+    }
+  }
+}
+
+.embed-modal {
+  max-width: 80vw;
+  max-height: 80vh;
+
+  h4 {
+    padding: 30px;
+    font-weight: 500;
+    font-size: 16px;
+    text-align: center;
+  }
+
+  .embed-modal__container {
+    padding: 10px;
+
+    .hint {
+      margin-bottom: 15px;
+    }
+
+    .embed-modal__html {
+      color: $ui-secondary-color;
+      outline: 0;
+      box-sizing: border-box;
+      display: block;
+      width: 100%;
+      border: none;
+      padding: 10px;
+      font-family: 'mastodon-font-monospace', monospace;
+      background: $ui-base-color;
+      color: $ui-primary-color;
+      font-size: 14px;
+      margin: 0;
+      margin-bottom: 15px;
+
+      &::-moz-focus-inner {
+        border: 0;
+      }
+
+      &::-moz-focus-inner,
+      &:focus,
+      &:active {
+        outline: 0 !important;
+      }
+
+      &:focus {
+        background: lighten($ui-base-color, 4%);
+      }
+
+      @media screen and (max-width: 600px) {
+        font-size: 16px;
+      }
+    }
+
+    .embed-modal__iframe {
+      width: 400px;
+      max-width: 100%;
+      overflow: hidden;
+      border: 0;
+    }
+  }
+}
diff --git a/app/javascript/styles/mastodon/containers.scss b/app/javascript/styles/mastodon/containers.scss
new file mode 100644
index 00000000000..af2589e23c3
--- /dev/null
+++ b/app/javascript/styles/mastodon/containers.scss
@@ -0,0 +1,116 @@
+.container {
+  width: 700px;
+  margin: 0 auto;
+  margin-top: 40px;
+
+  @media screen and (max-width: 740px) {
+    width: 100%;
+    margin: 0;
+  }
+}
+
+.logo-container {
+  margin: 100px auto;
+  margin-bottom: 50px;
+
+  @media screen and (max-width: 400px) {
+    margin: 30px auto;
+    margin-bottom: 20px;
+  }
+
+  h1 {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+
+    img {
+      height: 42px;
+      margin-right: 10px;
+    }
+
+    a {
+      display: flex;
+      justify-content: center;
+      align-items: center;
+      color: $primary-text-color;
+      text-decoration: none;
+      outline: 0;
+      padding: 12px 16px;
+      line-height: 32px;
+      font-family: 'mastodon-font-display', sans-serif;
+      font-weight: 500;
+      font-size: 14px;
+    }
+  }
+}
+
+.compose-standalone {
+  .compose-form {
+    width: 400px;
+    margin: 0 auto;
+    padding: 20px 0;
+    margin-top: 40px;
+    box-sizing: border-box;
+
+    @media screen and (max-width: 400px) {
+      width: 100%;
+      margin-top: 0;
+      padding: 20px;
+    }
+  }
+}
+
+.account-header {
+  width: 400px;
+  margin: 0 auto;
+  display: flex;
+  font-size: 13px;
+  line-height: 18px;
+  box-sizing: border-box;
+  padding: 20px 0;
+  padding-bottom: 0;
+  margin-bottom: -30px;
+  margin-top: 40px;
+
+  @media screen and (max-width: 440px) {
+    width: 100%;
+    margin: 0;
+    margin-bottom: 10px;
+    padding: 20px;
+    padding-bottom: 0;
+  }
+
+  .avatar {
+    width: 40px;
+    height: 40px;
+    margin-right: 8px;
+
+    img {
+      width: 100%;
+      height: 100%;
+      display: block;
+      margin: 0;
+      border-radius: 4px;
+    }
+  }
+
+  .name {
+    flex: 1 1 auto;
+    color: $ui-secondary-color;
+    width: calc(100% - 88px);
+
+    .username {
+      display: block;
+      font-weight: 500;
+      text-overflow: ellipsis;
+      overflow: hidden;
+    }
+  }
+
+  .logout-link {
+    display: block;
+    font-size: 32px;
+    line-height: 40px;
+    margin-left: 8px;
+  }
+}
diff --git a/app/javascript/styles/mastodon/emoji_picker.scss b/app/javascript/styles/mastodon/emoji_picker.scss
new file mode 100644
index 00000000000..2b46d30fce3
--- /dev/null
+++ b/app/javascript/styles/mastodon/emoji_picker.scss
@@ -0,0 +1,199 @@
+.emoji-mart {
+  &,
+  * {
+    box-sizing: border-box;
+    line-height: 1.15;
+  }
+
+  font-size: 13px;
+  display: inline-block;
+  color: $ui-base-color;
+
+  .emoji-mart-emoji {
+    padding: 6px;
+  }
+}
+
+.emoji-mart-bar {
+  border: 0 solid darken($ui-secondary-color, 8%);
+
+  &:first-child {
+    border-bottom-width: 1px;
+    border-top-left-radius: 5px;
+    border-top-right-radius: 5px;
+    background: $ui-secondary-color;
+  }
+
+  &:last-child {
+    border-top-width: 1px;
+    border-bottom-left-radius: 5px;
+    border-bottom-right-radius: 5px;
+    display: none;
+  }
+}
+
+.emoji-mart-anchors {
+  display: flex;
+  justify-content: space-between;
+  padding: 0 6px;
+  color: $ui-primary-color;
+  line-height: 0;
+}
+
+.emoji-mart-anchor {
+  position: relative;
+  flex: 1;
+  text-align: center;
+  padding: 12px 4px;
+  overflow: hidden;
+  transition: color .1s ease-out;
+  cursor: pointer;
+
+  &:hover {
+    color: darken($ui-primary-color, 4%);
+  }
+}
+
+.emoji-mart-anchor-selected {
+  color: darken($ui-highlight-color, 3%);
+
+  &:hover {
+    color: darken($ui-highlight-color, 3%);
+  }
+
+  .emoji-mart-anchor-bar {
+    bottom: 0;
+  }
+}
+
+.emoji-mart-anchor-bar {
+  position: absolute;
+  bottom: -3px;
+  left: 0;
+  width: 100%;
+  height: 3px;
+  background-color: darken($ui-highlight-color, 3%);
+}
+
+.emoji-mart-anchors {
+  i {
+    display: inline-block;
+    width: 100%;
+    max-width: 22px;
+  }
+
+  svg {
+    fill: currentColor;
+    max-height: 18px;
+  }
+}
+
+.emoji-mart-scroll {
+  overflow-y: scroll;
+  height: 270px;
+  max-height: 35vh;
+  padding: 0 6px 6px;
+  background: $simple-background-color;
+  will-change: transform;
+}
+
+.emoji-mart-search {
+  padding: 10px;
+  padding-right: 45px;
+  background: $simple-background-color;
+
+  input {
+    font-size: 14px;
+    font-weight: 400;
+    padding: 7px 9px;
+    font-family: inherit;
+    display: block;
+    width: 100%;
+    background: rgba($ui-secondary-color, 0.3);
+    color: $ui-primary-color;
+    border: 1px solid $ui-secondary-color;
+    border-radius: 4px;
+
+    &::-moz-focus-inner {
+      border: 0;
+    }
+
+    &::-moz-focus-inner,
+    &:focus,
+    &:active {
+      outline: 0 !important;
+    }
+  }
+}
+
+.emoji-mart-category .emoji-mart-emoji {
+  cursor: pointer;
+
+  span {
+    z-index: 1;
+    position: relative;
+    text-align: center;
+  }
+
+  &:hover::before {
+    z-index: 0;
+    content: "";
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background-color: rgba($ui-secondary-color, 0.7);
+    border-radius: 100%;
+  }
+}
+
+.emoji-mart-category-label {
+  z-index: 2;
+  position: relative;
+  position: -webkit-sticky;
+  position: sticky;
+  top: 0;
+
+  span {
+    display: block;
+    width: 100%;
+    font-weight: 500;
+    padding: 5px 6px;
+    background: $simple-background-color;
+  }
+}
+
+.emoji-mart-emoji {
+  position: relative;
+  display: inline-block;
+  font-size: 0;
+
+  span {
+    width: 22px;
+    height: 22px;
+  }
+}
+
+.emoji-mart-no-results {
+  font-size: 14px;
+  text-align: center;
+  padding-top: 70px;
+  color: $ui-primary-color;
+
+  .emoji-mart-category-label {
+    display: none;
+  }
+
+  .emoji-mart-no-results-label {
+    margin-top: .2em;
+  }
+
+  .emoji-mart-emoji:hover::before {
+    content: none;
+  }
+}
+
+.emoji-mart-preview {
+  display: none;
+}
diff --git a/app/javascript/styles/mastodon/footer.scss b/app/javascript/styles/mastodon/footer.scss
new file mode 100644
index 00000000000..2d953b34e78
--- /dev/null
+++ b/app/javascript/styles/mastodon/footer.scss
@@ -0,0 +1,30 @@
+.footer {
+  text-align: center;
+  margin-top: 30px;
+  font-size: 12px;
+  color: darken($ui-secondary-color, 25%);
+
+  .domain {
+    font-weight: 500;
+
+    a {
+      color: inherit;
+      text-decoration: none;
+    }
+  }
+
+  .powered-by,
+  .single-user-login {
+    font-weight: 400;
+
+    a {
+      color: inherit;
+      text-decoration: underline;
+      font-weight: 500;
+
+      &:hover {
+        text-decoration: none;
+      }
+    }
+  }
+}
diff --git a/app/javascript/styles/mastodon/forms.scss b/app/javascript/styles/mastodon/forms.scss
new file mode 100644
index 00000000000..61fcf286ff4
--- /dev/null
+++ b/app/javascript/styles/mastodon/forms.scss
@@ -0,0 +1,540 @@
+code {
+  font-family: 'mastodon-font-monospace', monospace;
+  font-weight: 400;
+}
+
+.form-container {
+  max-width: 400px;
+  padding: 20px;
+  margin: 0 auto;
+}
+
+.simple_form {
+  .input {
+    margin-bottom: 15px;
+    overflow: hidden;
+  }
+
+  span.hint {
+    display: block;
+    color: $ui-primary-color;
+    font-size: 12px;
+    margin-top: 4px;
+  }
+
+  h4 {
+    text-transform: uppercase;
+    font-size: 13px;
+    font-weight: 500;
+    color: $ui-primary-color;
+    padding-bottom: 8px;
+    margin-bottom: 8px;
+    border-bottom: 1px solid lighten($ui-base-color, 8%);
+  }
+
+  p.hint {
+    margin-bottom: 15px;
+    color: $ui-primary-color;
+
+    &.subtle-hint {
+      text-align: center;
+      font-size: 12px;
+      line-height: 18px;
+      margin-top: 15px;
+      margin-bottom: 0;
+      color: $ui-primary-color;
+
+      a {
+        color: $ui-highlight-color;
+      }
+    }
+  }
+
+  .card {
+    margin-bottom: 15px;
+  }
+
+  strong {
+    font-weight: 500;
+  }
+
+  .label_input {
+    display: flex;
+
+    label {
+      flex: 0 0 auto;
+    }
+
+    input {
+      flex: 1 1 auto;
+    }
+  }
+
+  .input.with_label {
+    padding: 15px 0;
+    margin-bottom: 0;
+
+    .label_input {
+      flex-wrap: wrap;
+      align-items: flex-start;
+    }
+
+    &.select .label_input {
+      align-items: initial;
+    }
+
+    .label_input > label {
+      font-family: inherit;
+      font-size: 16px;
+      color: $primary-text-color;
+      display: block;
+      padding-top: 5px;
+      margin-bottom: 5px;
+      flex: 1;
+      min-width: 150px;
+      word-wrap: break-word;
+
+      &.select {
+        flex: 0;
+      }
+
+      & ~ * {
+        margin-left: 10px;
+      }
+    }
+
+    ul {
+      flex: 390px;
+    }
+
+    &.boolean {
+      padding: initial;
+      margin-bottom: initial;
+
+      .label_input > label {
+        font-family: inherit;
+        font-size: 14px;
+        color: $primary-text-color;
+        display: block;
+        width: auto;
+      }
+
+      label.checkbox {
+        position: relative;
+        padding-left: 25px;
+        flex: 1 1 auto;
+      }
+    }
+  }
+
+  .input.with_block_label {
+    & > label {
+      font-family: inherit;
+      font-size: 16px;
+      color: $primary-text-color;
+      display: block;
+      padding-top: 5px;
+    }
+
+    .hint {
+      margin-bottom: 15px;
+    }
+
+    li {
+      float: left;
+      width: 50%;
+    }
+  }
+
+  .fields-group {
+    margin-bottom: 25px;
+  }
+
+  .input.radio_buttons .radio label {
+    margin-bottom: 5px;
+    font-family: inherit;
+    font-size: 14px;
+    color: $primary-text-color;
+    display: block;
+    width: auto;
+  }
+
+  .input.boolean {
+    margin-bottom: 5px;
+
+    label {
+      font-family: inherit;
+      font-size: 14px;
+      color: $primary-text-color;
+      display: block;
+      width: auto;
+    }
+
+    label.checkbox {
+      position: relative;
+      padding-left: 25px;
+      flex: 1 1 auto;
+    }
+
+    input[type=checkbox] {
+      position: absolute;
+      left: 0;
+      top: 5px;
+      margin: 0;
+    }
+
+    .hint {
+      padding-left: 25px;
+      margin-left: 0;
+    }
+  }
+
+  .check_boxes {
+    .checkbox {
+      label {
+        font-family: inherit;
+        font-size: 14px;
+        color: $primary-text-color;
+        display: block;
+        width: auto;
+        position: relative;
+        padding-top: 5px;
+        padding-left: 25px;
+        flex: 1 1 auto;
+      }
+
+      input[type=checkbox] {
+        position: absolute;
+        left: 0;
+        top: 5px;
+        margin: 0;
+      }
+    }
+  }
+
+  input[type=text],
+  input[type=number],
+  input[type=email],
+  input[type=password],
+  textarea {
+    background: transparent;
+    box-sizing: border-box;
+    border: 0;
+    border-bottom: 2px solid $ui-primary-color;
+    border-radius: 2px 2px 0 0;
+    padding: 7px 4px;
+    font-size: 16px;
+    color: $primary-text-color;
+    display: block;
+    width: 100%;
+    outline: 0;
+    font-family: inherit;
+    resize: vertical;
+
+    &:invalid {
+      box-shadow: none;
+    }
+
+    &:focus:invalid {
+      border-bottom-color: $error-value-color;
+    }
+
+    &:required:valid {
+      border-bottom-color: $valid-value-color;
+    }
+
+    &:active,
+    &:focus {
+      border-bottom-color: $ui-highlight-color;
+      background: rgba($base-overlay-background, 0.1);
+    }
+  }
+
+  .input.field_with_errors {
+    label {
+      color: $error-value-color;
+    }
+
+    input[type=text],
+    input[type=email],
+    input[type=password] {
+      border-bottom-color: $error-value-color;
+    }
+
+    .error {
+      display: block;
+      font-weight: 500;
+      color: $error-value-color;
+      margin-top: 4px;
+    }
+  }
+
+  .actions {
+    margin-top: 30px;
+    display: flex;
+  }
+
+  button,
+  .button,
+  .block-button {
+    display: block;
+    width: 100%;
+    border: 0;
+    border-radius: 4px;
+    background: $ui-highlight-color;
+    color: $primary-text-color;
+    font-size: 18px;
+    line-height: inherit;
+    height: auto;
+    padding: 10px;
+    text-transform: uppercase;
+    text-decoration: none;
+    text-align: center;
+    box-sizing: border-box;
+    cursor: pointer;
+    font-weight: 500;
+    outline: 0;
+    margin-bottom: 10px;
+    margin-right: 10px;
+
+    &:last-child {
+      margin-right: 0;
+    }
+
+    &:hover {
+      background-color: lighten($ui-highlight-color, 5%);
+    }
+
+    &:active,
+    &:focus {
+      background-color: darken($ui-highlight-color, 5%);
+    }
+
+    &.negative {
+      background: $error-value-color;
+
+      &:hover {
+        background-color: lighten($error-value-color, 5%);
+      }
+
+      &:active,
+      &:focus {
+        background-color: darken($error-value-color, 5%);
+      }
+    }
+  }
+
+  select {
+    font-size: 16px;
+    max-height: 29px;
+  }
+
+  .input-with-append {
+    position: relative;
+
+    .input input {
+      padding-right: 127px;
+    }
+
+    .append {
+      position: absolute;
+      right: 0;
+      top: 0;
+      padding: 7px 4px;
+      padding-bottom: 9px;
+      font-size: 16px;
+      color: $ui-base-lighter-color;
+      font-family: inherit;
+      pointer-events: none;
+      cursor: default;
+    }
+  }
+}
+
+.flash-message {
+  background: lighten($ui-base-color, 8%);
+  color: $ui-primary-color;
+  border-radius: 4px;
+  padding: 15px 10px;
+  margin-bottom: 30px;
+  box-shadow: 0 0 5px rgba($base-shadow-color, 0.2);
+  text-align: center;
+
+  p {
+    margin-bottom: 15px;
+  }
+
+  .oauth-code {
+    color: $ui-secondary-color;
+    outline: 0;
+    box-sizing: border-box;
+    display: block;
+    width: 100%;
+    border: none;
+    padding: 10px;
+    font-family: 'mastodon-font-monospace', monospace;
+    background: $ui-base-color;
+    color: $ui-primary-color;
+    font-size: 14px;
+    margin: 0;
+
+    &::-moz-focus-inner {
+      border: 0;
+    }
+
+    &::-moz-focus-inner,
+    &:focus,
+    &:active {
+      outline: 0 !important;
+    }
+
+    &:focus {
+      background: lighten($ui-base-color, 4%);
+    }
+  }
+
+  strong {
+    font-weight: 500;
+  }
+
+  @media screen and (max-width: 740px) and (min-width: 441px) {
+    margin-top: 40px;
+  }
+}
+
+.form-footer {
+  margin-top: 30px;
+  text-align: center;
+
+  a {
+    color: $ui-primary-color;
+    text-decoration: none;
+
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+}
+
+.oauth-prompt,
+.follow-prompt {
+  margin-bottom: 30px;
+  text-align: center;
+  color: $ui-primary-color;
+
+  h2 {
+    font-size: 16px;
+    margin-bottom: 30px;
+  }
+
+  strong {
+    color: $ui-secondary-color;
+    font-weight: 500;
+  }
+
+  @media screen and (max-width: 740px) and (min-width: 441px) {
+    margin-top: 40px;
+  }
+}
+
+.qr-wrapper {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: flex-start;
+}
+
+.qr-code {
+  flex: 0 0 auto;
+  background: $simple-background-color;
+  padding: 4px;
+  margin: 0 10px 20px 0;
+  box-shadow: 0 0 15px rgba($base-shadow-color, 0.2);
+  display: inline-block;
+
+  svg {
+    display: block;
+    margin: 0;
+  }
+}
+
+.qr-alternative {
+  margin-bottom: 20px;
+  color: $ui-secondary-color;
+  flex: 150px;
+
+  samp {
+    display: block;
+    font-size: 14px;
+  }
+}
+
+.table-form {
+  p {
+    margin-bottom: 15px;
+
+    strong {
+      font-weight: 500;
+    }
+  }
+}
+
+.simple_form,
+.table-form {
+  .warning {
+    box-sizing: border-box;
+    background: rgba($error-value-color, 0.5);
+    color: $primary-text-color;
+    text-shadow: 1px 1px 0 rgba($base-shadow-color, 0.3);
+    box-shadow: 0 2px 6px rgba($base-shadow-color, 0.4);
+    border-radius: 4px;
+    padding: 10px;
+    margin-bottom: 15px;
+
+    a {
+      color: $primary-text-color;
+      text-decoration: underline;
+
+      &:hover,
+      &:focus,
+      &:active {
+        text-decoration: none;
+      }
+    }
+
+    strong {
+      font-weight: 600;
+      display: block;
+      margin-bottom: 5px;
+
+      .fa {
+        font-weight: 400;
+      }
+    }
+  }
+}
+
+.action-pagination {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+
+  .actions,
+  .pagination {
+    flex: 1 1 auto;
+  }
+
+  .actions {
+    padding: 30px 0;
+    padding-right: 20px;
+    flex: 0 0 auto;
+  }
+}
+
+.post-follow-actions {
+  text-align: center;
+  color: $ui-primary-color;
+
+  div {
+    margin-bottom: 4px;
+  }
+}
diff --git a/app/javascript/styles/mastodon/landing_strip.scss b/app/javascript/styles/mastodon/landing_strip.scss
new file mode 100644
index 00000000000..0bf9daafd4b
--- /dev/null
+++ b/app/javascript/styles/mastodon/landing_strip.scss
@@ -0,0 +1,36 @@
+.landing-strip,
+.memoriam-strip {
+  background: rgba(darken($ui-base-color, 7%), 0.8);
+  color: $ui-primary-color;
+  font-weight: 400;
+  padding: 14px;
+  border-radius: 4px;
+  margin-bottom: 20px;
+  display: flex;
+  align-items: center;
+
+  strong,
+  a {
+    font-weight: 500;
+  }
+
+  a {
+    color: inherit;
+    text-decoration: underline;
+  }
+
+  .logo {
+    width: 30px;
+    height: 30px;
+    flex: 0 0 auto;
+    margin-right: 15px;
+  }
+
+  @media screen and (max-width: 740px) {
+    margin-bottom: 0;
+  }
+}
+
+.memoriam-strip {
+  background: rgba($base-shadow-color, 0.7);
+}
diff --git a/app/javascript/styles/mastodon/lists.scss b/app/javascript/styles/mastodon/lists.scss
new file mode 100644
index 00000000000..6019cd80028
--- /dev/null
+++ b/app/javascript/styles/mastodon/lists.scss
@@ -0,0 +1,19 @@
+.no-list {
+  list-style: none;
+
+  li {
+    display: inline-block;
+    margin: 0 5px;
+  }
+}
+
+.recovery-codes {
+  list-style: none;
+  margin: 0 auto;
+
+  li {
+    font-size: 125%;
+    line-height: 1.5;
+    letter-spacing: 1px;
+  }
+}
diff --git a/app/javascript/styles/mastodon/reset.scss b/app/javascript/styles/mastodon/reset.scss
new file mode 100644
index 00000000000..cc5ba9d7c8c
--- /dev/null
+++ b/app/javascript/styles/mastodon/reset.scss
@@ -0,0 +1,91 @@
+/* http://meyerweb.com/eric/tools/css/reset/
+   v2.0 | 20110126
+   License: none (public domain)
+*/
+
+html, body, div, span, applet, object, iframe,
+h1, h2, h3, h4, h5, h6, p, blockquote, pre,
+a, abbr, acronym, address, big, cite, code,
+del, dfn, em, img, ins, kbd, q, s, samp,
+small, strike, strong, sub, sup, tt, var,
+b, u, i, center,
+dl, dt, dd, ol, ul, li,
+fieldset, form, label, legend,
+table, caption, tbody, tfoot, thead, tr, th, td,
+article, aside, canvas, details, embed,
+figure, figcaption, footer, header, hgroup,
+menu, nav, output, ruby, section, summary,
+time, mark, audio, video {
+  margin: 0;
+  padding: 0;
+  border: 0;
+  font-size: 100%;
+  font: inherit;
+  vertical-align: baseline;
+}
+
+/* HTML5 display-role reset for older browsers */
+article, aside, details, figcaption, figure,
+footer, header, hgroup, menu, nav, section {
+  display: block;
+}
+
+body {
+  line-height: 1;
+}
+
+ol, ul {
+  list-style: none;
+}
+
+blockquote, q {
+  quotes: none;
+}
+
+blockquote:before, blockquote:after,
+q:before, q:after {
+  content: '';
+  content: none;
+}
+
+table {
+  border-collapse: collapse;
+  border-spacing: 0;
+}
+
+::-webkit-scrollbar {
+  width: 8px;
+  height: 8px;
+}
+
+::-webkit-scrollbar-thumb {
+  background: lighten($ui-base-color, 4%);
+  border: 0px none $base-border-color;
+  border-radius: 50px;
+}
+
+::-webkit-scrollbar-thumb:hover {
+  background: lighten($ui-base-color, 6%);
+}
+
+::-webkit-scrollbar-thumb:active {
+  background: lighten($ui-base-color, 4%);
+}
+
+::-webkit-scrollbar-track {
+  border: 0px none $base-border-color;
+  border-radius: 0;
+  background: rgba($base-overlay-background, 0.1);
+}
+
+::-webkit-scrollbar-track:hover {
+  background: $ui-base-color;
+}
+
+::-webkit-scrollbar-track:active {
+  background: $ui-base-color;
+}
+
+::-webkit-scrollbar-corner {
+  background: transparent;
+}
diff --git a/app/javascript/styles/mastodon/rtl.scss b/app/javascript/styles/mastodon/rtl.scss
new file mode 100644
index 00000000000..67bfa8a3857
--- /dev/null
+++ b/app/javascript/styles/mastodon/rtl.scss
@@ -0,0 +1,254 @@
+body.rtl {
+  direction: rtl;
+
+  .column-link__icon,
+  .column-header__icon {
+    margin-right: 0;
+    margin-left: 5px;
+  }
+
+  .character-counter__wrapper {
+    margin-right: 8px;
+    margin-left: 16px;
+  }
+
+  .navigation-bar__profile {
+    margin-left: 0;
+    margin-right: 8px;
+  }
+
+  .search__input {
+    padding-right: 10px;
+    padding-left: 30px;
+  }
+
+  .search__icon .fa {
+    right: auto;
+    left: 10px;
+  }
+
+  .column-header__buttons {
+    left: 0;
+    right: auto;
+  }
+
+  .column-header__back-button {
+    padding-left: 5px;
+    padding-right: 0;
+  }
+
+  .column-header__setting-arrows {
+    float: left;
+  }
+
+  .compose-form__modifiers {
+    border-radius: 0 0 0 4px;
+  }
+
+  .setting-toggle {
+    margin-left: 0;
+    margin-right: 8px;
+  }
+
+  .setting-meta__label {
+    float: left;
+  }
+
+  .status__avatar {
+    left: auto;
+    right: 10px;
+  }
+
+  .status,
+  .activity-stream .status.light {
+    padding-left: 10px;
+    padding-right: 68px;
+  }
+
+  .status__info .status__display-name,
+  .activity-stream .status.light .status__display-name {
+    padding-left: 25px;
+    padding-right: 0;
+  }
+
+  .activity-stream .pre-header {
+    padding-right: 68px;
+    padding-left: 0;
+  }
+
+  .status__prepend {
+    margin-left: 0;
+    margin-right: 68px;
+  }
+
+  .status__prepend-icon-wrapper {
+    left: auto;
+    right: -26px;
+  }
+
+  .activity-stream .pre-header .pre-header__icon {
+    left: auto;
+    right: 42px;
+  }
+
+  .account__avatar-overlay-overlay {
+    right: auto;
+    left: 0;
+  }
+
+  .column-back-button--slim-button {
+    right: auto;
+    left: 0;
+  }
+
+  .status__relative-time,
+  .activity-stream .status.light .status__header .status__meta {
+    float: left;
+  }
+
+  .activity-stream .detailed-status.light .detailed-status__display-name > div {
+    float: right;
+    margin-right: 0;
+    margin-left: 10px;
+  }
+
+  .activity-stream .detailed-status.light .detailed-status__meta span > span {
+    margin-left: 0;
+    margin-right: 6px;
+  }
+
+  .status__action-bar-button {
+    float: right;
+    margin-right: 0;
+    margin-left: 18px;
+  }
+
+  .status__action-bar-dropdown {
+    float: right;
+  }
+
+  .privacy-dropdown__dropdown {
+    margin-left: 0;
+    margin-right: 40px;
+  }
+
+  .privacy-dropdown__option__icon {
+    margin-left: 10px;
+    margin-right: 0;
+  }
+
+  .detailed-status__display-avatar {
+    margin-right: 0;
+    margin-left: 10px;
+    float: right;
+  }
+
+  .detailed-status__favorites,
+  .detailed-status__reblogs {
+    margin-left: 0;
+    margin-right: 6px;
+  }
+
+  .fa-ul {
+    margin-left: 0;
+    margin-left: 2.14285714em;
+  }
+
+  .fa-li {
+    left: auto;
+    right: -2.14285714em;
+  }
+
+  .admin-wrapper .sidebar ul a i.fa,
+  a.table-action-link i.fa {
+    margin-right: 0;
+    margin-left: 5px;
+  }
+
+  .simple_form .check_boxes .checkbox label,
+  .simple_form .input.with_label.boolean label.checkbox {
+    padding-left: 0;
+    padding-right: 25px;
+  }
+
+  .simple_form .check_boxes .checkbox input[type="checkbox"],
+  .simple_form .input.boolean input[type="checkbox"] {
+    left: auto;
+    right: 0;
+  }
+
+  .simple_form .input-with-append .input input {
+    padding-left: 127px;
+    padding-right: 0;
+  }
+
+  .simple_form .input-with-append .append {
+    right: auto;
+    left: 0;
+  }
+
+  .table th,
+  .table td {
+    text-align: right;
+  }
+
+  .filters .filter-subset {
+    margin-right: 0;
+    margin-left: 45px;
+  }
+
+  .landing-page .header-wrapper .mascot {
+    right: 60px;
+    left: auto;
+  }
+
+  .landing-page .header .hero .floats .float-1 {
+    left: -120px;
+    right: auto;
+  }
+
+  .landing-page .header .hero .floats .float-2 {
+    left: 210px;
+    right: auto;
+  }
+
+  .landing-page .header .hero .floats .float-3 {
+    left: 110px;
+    right: auto;
+  }
+
+  .landing-page .header .links .brand img {
+    left: 0;
+  }
+
+  .landing-page .fa-external-link {
+    padding-right: 5px;
+    padding-left: 0 !important;
+  }
+
+  .landing-page .features #mastodon-timeline {
+    margin-right: 0;
+    margin-left: 30px;
+  }
+
+  @media screen and (min-width: 631px) {
+    .column,
+    .drawer {
+      padding-left: 5px;
+      padding-right: 5px;
+
+      &:first-child {
+        padding-left: 5px;
+        padding-right: 10px;
+      }
+    }
+
+    .columns-area > div {
+      .column,
+      .drawer {
+        padding-left: 5px;
+        padding-right: 5px;
+      }
+    }
+  }
+}
diff --git a/app/javascript/styles/mastodon/stream_entries.scss b/app/javascript/styles/mastodon/stream_entries.scss
new file mode 100644
index 00000000000..4f323a37870
--- /dev/null
+++ b/app/javascript/styles/mastodon/stream_entries.scss
@@ -0,0 +1,339 @@
+.activity-stream {
+  clear: both;
+  box-shadow: 0 0 15px rgba($base-shadow-color, 0.2);
+
+  .entry {
+    background: $simple-background-color;
+
+    .detailed-status.light,
+    .status.light {
+      border-bottom: 1px solid $ui-secondary-color;
+      animation: none;
+    }
+
+    &:last-child {
+      &,
+      .detailed-status.light,
+      .status.light {
+        border-bottom: 0;
+        border-radius: 0 0 4px 4px;
+      }
+    }
+
+    &:first-child {
+      &,
+      .detailed-status.light,
+      .status.light {
+        border-radius: 4px 4px 0 0;
+      }
+
+      &:last-child {
+        &,
+        .detailed-status.light,
+        .status.light {
+          border-radius: 4px;
+        }
+      }
+    }
+
+    @media screen and (max-width: 740px) {
+      &,
+      .detailed-status.light,
+      .status.light {
+        border-radius: 0 !important;
+      }
+    }
+  }
+
+  &.with-header {
+    .entry {
+      &:first-child {
+        &,
+        .detailed-status.light,
+        .status.light {
+          border-radius: 0;
+        }
+
+        &:last-child {
+          &,
+          .detailed-status.light,
+          .status.light {
+            border-radius: 0 0 4px 4px;
+          }
+        }
+      }
+    }
+  }
+
+  .status.light {
+    padding: 14px 14px 14px (48px + 14px * 2);
+    position: relative;
+    min-height: 48px;
+    cursor: default;
+
+    .status__header {
+      font-size: 15px;
+
+      .status__meta {
+        float: right;
+        font-size: 14px;
+
+        .status__relative-time {
+          color: $ui-primary-color;
+        }
+      }
+    }
+
+    .status__display-name {
+      display: block;
+      max-width: 100%;
+      padding-right: 25px;
+      color: $ui-base-color;
+    }
+
+    .status__avatar {
+      position: absolute;
+      left: 14px;
+      top: 14px;
+      width: 48px;
+      height: 48px;
+
+      & > div {
+        width: 48px;
+        height: 48px;
+      }
+
+      img {
+        display: block;
+        border-radius: 4px;
+      }
+    }
+
+    .display-name {
+      display: block;
+      max-width: 100%;
+      overflow: hidden;
+      white-space: nowrap;
+      text-overflow: ellipsis;
+
+      strong {
+        font-weight: 500;
+        color: $ui-base-color;
+      }
+
+      span {
+        font-size: 14px;
+        color: $ui-primary-color;
+      }
+    }
+
+    .status__content {
+      color: $ui-base-color;
+
+      a {
+        color: $ui-highlight-color;
+      }
+
+      a.status__content__spoiler-link {
+        color: $primary-text-color;
+        background: $ui-primary-color;
+
+        &:hover {
+          background: lighten($ui-primary-color, 8%);
+        }
+      }
+    }
+  }
+
+  .detailed-status.light {
+    padding: 14px;
+    background: $simple-background-color;
+    cursor: default;
+
+    .detailed-status__display-name {
+      display: block;
+      overflow: hidden;
+      margin-bottom: 15px;
+
+      & > div {
+        float: left;
+        margin-right: 10px;
+      }
+
+      .display-name {
+        display: block;
+        max-width: 100%;
+        overflow: hidden;
+        white-space: nowrap;
+        text-overflow: ellipsis;
+
+        strong {
+          font-weight: 500;
+          color: $ui-base-color;
+        }
+
+        span {
+          font-size: 14px;
+          color: $ui-primary-color;
+        }
+      }
+    }
+
+    .avatar {
+      width: 48px;
+      height: 48px;
+
+      img {
+        display: block;
+        border-radius: 4px;
+      }
+    }
+
+    .status__content {
+      color: $ui-base-color;
+
+      a {
+        color: $ui-highlight-color;
+      }
+
+      a.status__content__spoiler-link {
+        color: $primary-text-color;
+        background: $ui-primary-color;
+
+        &:hover {
+          background: lighten($ui-primary-color, 8%);
+        }
+      }
+    }
+
+    .detailed-status__meta {
+      margin-top: 15px;
+      color: $ui-primary-color;
+      font-size: 14px;
+      line-height: 18px;
+
+      a {
+        color: inherit;
+      }
+
+      span > span {
+        font-weight: 500;
+        font-size: 12px;
+        margin-left: 6px;
+        display: inline-block;
+      }
+    }
+
+    .status-card {
+      border-color: lighten($ui-secondary-color, 4%);
+      color: darken($ui-primary-color, 4%);
+
+      &:hover {
+        background: lighten($ui-secondary-color, 4%);
+      }
+    }
+
+    .status-card__title,
+    .status-card__description {
+      color: $ui-base-color;
+    }
+
+    .status-card__image {
+      background: $ui-secondary-color;
+    }
+  }
+
+  .media-spoiler {
+    background: $ui-primary-color;
+    color: $white;
+    transition: all 100ms linear;
+
+    &:hover,
+    &:active,
+    &:focus {
+      background: darken($ui-primary-color, 5%);
+      color: unset;
+    }
+  }
+
+  .pre-header {
+    padding: 14px 0;
+    padding-left: (48px + 14px * 2);
+    padding-bottom: 0;
+    margin-bottom: -4px;
+    color: $ui-primary-color;
+    font-size: 14px;
+    position: relative;
+
+    .pre-header__icon {
+      position: absolute;
+      left: (48px + 14px * 2 - 30px);
+    }
+
+    .status__display-name.muted strong {
+      color: $ui-primary-color;
+    }
+  }
+
+  .open-in-web-link {
+    text-decoration: none;
+
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+}
+
+.embed {
+  .activity-stream {
+    box-shadow: none;
+
+    .entry {
+
+      .detailed-status.light {
+        display: flex;
+        flex-wrap: wrap;
+        justify-content: space-between;
+        align-items: flex-start;
+
+        .detailed-status__display-name {
+          flex: 1;
+          margin: 0 5px 15px 0;
+        }
+
+        .button.button-secondary.logo-button {
+          flex: 0 auto;
+          font-size: 14px;
+
+          svg {
+            width: 20px;
+            height: auto;
+            vertical-align: middle;
+            margin-right: 5px;
+
+            path:first-child {
+              fill: $ui-primary-color;
+            }
+
+            path:last-child {
+              fill: $simple-background-color;
+            }
+          }
+
+          &:active,
+          &:focus,
+          &:hover {
+            svg path:first-child {
+              fill: lighten($ui-primary-color, 4%);
+            }
+          }
+        }
+
+        .status__content,
+        .detailed-status__meta {
+          flex: 100%;
+        }
+      }
+    }
+  }
+}
diff --git a/app/javascript/styles/mastodon/tables.scss b/app/javascript/styles/mastodon/tables.scss
new file mode 100644
index 00000000000..ad46f5f9f50
--- /dev/null
+++ b/app/javascript/styles/mastodon/tables.scss
@@ -0,0 +1,76 @@
+.table {
+  width: 100%;
+  max-width: 100%;
+  border-spacing: 0;
+  border-collapse: collapse;
+
+  th,
+  td {
+    padding: 8px;
+    line-height: 18px;
+    vertical-align: top;
+    border-top: 1px solid $ui-base-color;
+    text-align: left;
+  }
+
+  & > thead > tr > th {
+    vertical-align: bottom;
+    border-bottom: 2px solid $ui-base-color;
+    border-top: 0;
+    font-weight: 500;
+  }
+
+  & > tbody > tr > th {
+    font-weight: 500;
+  }
+
+  & > tbody > tr:nth-child(odd) > td,
+  & > tbody > tr:nth-child(odd) > th {
+    background: $ui-base-color;
+  }
+
+  a {
+    color: $ui-highlight-color;
+    text-decoration: underline;
+
+    &:hover {
+      text-decoration: none;
+    }
+  }
+
+  strong {
+    font-weight: 500;
+  }
+
+  &.inline-table > tbody > tr:nth-child(odd) > td,
+  &.inline-table > tbody > tr:nth-child(odd) > th {
+    background: transparent;
+  }
+}
+
+.table-wrapper {
+  overflow: auto;
+  margin-bottom: 20px;
+}
+
+samp {
+  font-family: 'mastodon-font-monospace', monospace;
+}
+
+a.table-action-link {
+  text-decoration: none;
+  display: inline-block;
+  margin-right: 5px;
+  padding: 0 10px;
+  color: rgba($primary-text-color, 0.7);
+  font-weight: 500;
+
+  &:hover {
+    color: $primary-text-color;
+  }
+
+  i.fa {
+    font-weight: 400;
+    margin-right: 5px;
+  }
+}
diff --git a/app/javascript/styles/mastodon/variables.scss b/app/javascript/styles/mastodon/variables.scss
new file mode 100644
index 00000000000..52c8cd1cf5c
--- /dev/null
+++ b/app/javascript/styles/mastodon/variables.scss
@@ -0,0 +1,29 @@
+// Commonly used web colors
+$black: #000000;            // Black
+$white: #ffffff;            // White
+$success-green: #79bd9a;    // Padua
+$error-red: #df405a;        // Cerise
+$warning-red: #ff5050;      // Sunset Orange
+$gold-star: #ca8f04;        // Dark Goldenrod
+
+// Values from the classic Mastodon UI
+$classic-base-color: #282c37;         // Midnight Express
+$classic-primary-color: #9baec8;      // Echo Blue
+$classic-secondary-color: #d9e1e8;    // Pattens Blue
+$classic-highlight-color: #2b90d9;    // Summer Sky
+
+// Variables for defaults in UI
+$base-shadow-color: $black !default;
+$base-overlay-background: $black !default;
+$base-border-color: $white !default;
+$simple-background-color: $white !default;
+$primary-text-color: $white !default;
+$valid-value-color: $success-green !default;
+$error-value-color: $error-red !default;
+
+// Tell UI to use selected colors
+$ui-base-color: $classic-base-color !default;                  // Darkest
+$ui-base-lighter-color: lighten($ui-base-color, 26%) !default; // Lighter darkest
+$ui-primary-color: $classic-primary-color !default;            // Lighter
+$ui-secondary-color: $classic-secondary-color !default;        // Lightest
+$ui-highlight-color: $classic-highlight-color !default;        // Vibrant