v2.2.0 - Banning, ready and unready all buttons

Feature updates

You can now ban players from your lobby. This is based on SteamID, so it shouldn't mess up when they rejoin.
You can ready and un-ready everyone in the lobby at once.
Spectators have been changed to use the new ingame spectator logic added in the latest demo update.

Credits to @1dNDN for a lot of the code in this update.