* Group reports by target account

* Improve CSS

* NavLinks with activeclass instead of Link in actionbar to highlight active tab

* highlight border-bottom in action bar consistent to public view

Port f66a786029 to glitch-soc

Port 478ca39e5e to glitch-soc

Port front-end changes from f7765acf9d to glitch-soc

Port 25b0d7538e to glitch-soc

Port front-end changes from c36b9cc5a6 to glitch-soc

Port front-end changes from c083816c24 to glitch-soc

* RU: Fixed typos and wrong translations

* RU: Added missing "chosen_languages" string

* RU: Fixed translation for "Features" tab in Admin Dashboard

* Shortened "Mobile apps" string, lowercased "following" string (it needs plurals btw), fixed typo at "copy" string.

* Fixed "media only" string, shortened "Content warning" placeholder, edited "mute thread" translation

* RU: Fixed "Reply to all" translation, Re-worded "short description" translation

You currently need to enable `layout.css.scrollbar-colors.enabled` in `about:config` in Firefox
Nightly.

Port f08e6e9ab5 to glitch-soc

Inspired from 0bfa0f2374

If the current logged-in user is an admin, add quick links to the admin
interface in account and toot dropdown menu. Suggestion by @ashkitten

Port a060beee72 to glitch-soc

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Port 1bfe735d57 to glitch-soc