* Implement Assignment of Reports (#6967)
* Change translation of admin.report.comment.label to "Report Comment" for clarity
As we'll soon add the ability for reports to have comments on them, this clarification makes sense.
* Implement notes for Reports
This enables moderators to leave comments about a report whilst they work on it
* Fix display of report moderation notes
* Allow reports to be reopened / marked as unresolved
* Redirect to reports listing upon resolution of report
* Implement "resolve with note" functionality
* Add inverse relationship for report notes
* Remove additional database querying when loading report notes
* Fix tests for reports
* Fix localisations for report notes / reports
* Simplify admin/reports controller filtering for index
* Rename parameter to resolved
* Fix issue where reports view could not access filter_link_to
* Add coverage for admin/reports controller
* DRY up resolution of related reports for target account
* Clean up admin/reports routes
* Add Report#statuses method
* DRY up current account action taken params
* Rubocop styles
* Add Admin::BaseController to wrap admin area
Extracts the setting of the `admin` layout and verifying that users are admins
to a common base class for the admin/ controllers.
* Add basic coverage for admin/reports and admin/settings controllers
Yamagishi Kazutoshi