* When JWT tokens are used to join the chat and the username conflicts:
instead of renaming the new user to add a "2" it will disconnect the
original login (sending a message that they have signed in somewhere
else and are logged out now)
* When disconnected the text entry box will be greyed out.
* Improvements for the mobile user experience: if you're viewing the
chat history panel and have unread messages or DMs, a number indicator
appears on the channels button. It is grey for public channel messages
or red if any of them are DMs
* Fix the emoji picker drop-down on the first messages of a DM thread
* Consolidate all the Video flags (active, nsfw, mutual, mutualOpen)
into a bitmask flag (single integer)
* New video flag for when the source has muted their video, to show a
crossed out grey mic on their camera for other chatters
* Bugfixes around syncing the mute state for self and other videos when
videos are opened, closed and opened again
* Profile pictures on the DMs list
* Add a distinctly colored title and background for DM threads apart
from the public channels
* On the Who List, the profile picture is clickable to open profile
links
* Fix auto-scrolling issues: it won't autoscroll if the new message was
in a different channel, and when toggling between channels always
scroll back to the bottom of that channel
* The who list now sorts alphabetically instead of random
* New user controls when they share video:
* Require users to also be sharing before they open ours
* We auto-open a viewer's video when they open ours