Port 44a7d87cb1 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

I don't like it changing files this way, but it's basically what
c49213f0ea and a few others did.

Port part of be0bc9acbf and 7e244879fe
to glitch-soc

Port front-end changes from 8f03b7a2fb to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

Port 52e5c07948 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

Port 974b1b79ce to glitch-soc

Signed-off-by: Thibaut Girka <thib@sitedethib.com>

Port a4301b5202 and be93318c05 to glitch-soc

Port front-end parts of 3a92885a86 to glitch-soc

I'm not sure what purpose these “+” served?!

Port 9110db41c5 to glitch

This PR adds a new notification cleaning mode, super perfectly tuned for accessibility, and removes the previous notification cleaning functionality as it's now redundant.

* w.i.p. notif clearing mode

* Better CSS for selected notification and shorter text if Stretch is off

* wip for rebase ~

* all working in notif clearing mode, except the actual removal

* bulk delete route for piggo

* cleaning + refactor. endpoint gives 422 for some reason

* formatting

* use the right route

* fix broken destroy_multiple

* load more notifs after succ cleaning

* satisfy eslint

* Removed CSS for the old notif delete button

* Tabindex=0 is mandatory

In order to make it possible to tab to this element you must have tab index = 0. Removing this violates WCAG and makes it impossible to use the interface without good eyesight and a mouse. So nobody with certain mobility impairments, vision impairments, or brain injuries would be able to use this feature if you don't have tabindex=0

* Corrected aria-label

Previous label implied a different behavior from what actually happens

* aria role localization & made the overlay behave like a checkbox

* checkboxes css and better contrast

* color tuning for the notif overlay

* fanceh checkboxes etc and nice backgrounds

* SHUT UP TRAVIS

* Added DELETE verb for notifications

* Added notification dismiss button to status dropdown

* Added reveal-on-hover notif dismiss button, added FollowNotification component

- Better unified reblogs, statuses, and notifications
- Polished up collapsed toots greatly
- Apologies to bea if this makes everything more difficult