Sidebar: Show home button on mobile.

Home Sidebar: Remove top bar.

Jump to existing message if exists.

Translate age gate.
Add additional limitations on KaTeX.
Prevent any message overflow.

Hook events into Markdown render using ref.

Fix: Show correct time format on left side of messages.

Temporary change: Prevent TextFile from loading large content.
Fixes #1: File preview failing with JSON files.
Add a way to open text files in new tab.

- Image embeds actions now use a better styling that's the same as the other action stylings

Allow 20 max rows on message area.

Don't pass dispatcher in, just provide it globally.
Fix: Allow clicking through to profile from server sidebar.

- attachment scaling now works for all forms of attachments
- switched to grid based action bar
- added onLoad class so image proportions are "trimmed" once the image has loaded to avoid moving the view around before loading
  - this may be possible to remove at some point