* Replace deprecated String.prototype.substr()
.substr() is deprecated so we replace it with .slice() which works similarily but isn't deprecated
* Change String.prototype.substring() to String.prototype.slice()
.substring() and .slice() work very similary but .slice() is a bit faster and stricter
* Add ESLint rule to forbid usage of .substr and .substring
.substr() is deprecated and .substring() is very similar to .slice() so better to use .slice() at all times
Signed-off-by: Tobias Speicher <rootcommander@gmail.com>
* Refactor uses of icons to an Icon component in web UI
* Refactor options passed to the Icon component
* Make tests work with absolute component paths
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