* Custom emoji editor: implement backend
This reuses the logo upload code
* Implement emoji edit admin interface
Again reuse base64 logic from the logo upload
* Allow toggling between uploaded and default emojis
* Add route that always serves uploaded emojis
This is needed for the admin emoji interface,
as otherwise the emojis will 404 if custom emojis are disabled
* Fix linter warnings
* Remove custom/uploaded emoji logic
* Reset timer after emoji deletion
* Setup: copy built-in emojis to emoji directory
* Improve name & color change modal design
* Resend user info after color change
That way the name change dialog shows the correct
color when opening it the next time
* Name change modal: allow overflow of color picker
* Allow submitting form only if button is enabled
* Prettified Code!
* Make button & text input same height
Co-authored-by: xarantolus <xarantolus@users.noreply.github.com>
