fix #1010 Add back conversation red line

Closes #1010

See merge request !1292

Click-to-reveal cover for link previews in NSFW posts

Closes #973

See merge request !1287

video_attachment: Only preload metadata

See merge request !1291

This hints browsers that only the metadata and maybe the first few frames are
needed. Which avoids downloading the entire video, which isn't really needed
in our case.

add missing play-circle icon

See merge request !1290

Various timeline fixes

See merge request !1283

Fix pinned statuses and perhaps some other stuff

See merge request !1288

* origin/develop:
  change favicon dimensions for high res, add handling when favicon isn't available
  remove the favicon changes
  make badge just a ball, make it use theming
  add favicon badge for unread notifs

Add favicon badge for unread notifs

See merge request !1273

Update develop changelog to contain 2.2.1 release

See merge request !1286

# Conflicts:
#   CHANGELOG.md

Remove title from index.html, title is now from server generated meta

See merge request !1285

fix #999  emoji not working in profile field names

Closes #999

See merge request !1284

Fix that 1px scroll on input for real this time maybe

See merge request !1282

Update CHANGELOG.md

See merge request !1281

Update CHANGELOG.md to match master

See merge request !1279

Fix #994 react popover overflowing

Closes #994

See merge request !1280

Chat scroll fix for vertical screen

Closes #997

See merge request !1277

Fetch the messages until the scrollbar becomes visible, so that the user
always has the ability to scroll up and load new messages.