Stop listening to chat after leaving a game.
Hide sidebar while in lobby.
Don't use Goko's convenience variable mtgRoom.currentRoomId. It doesn't get reset when you leave the multiplayer lobby to play a bot game.
Use mtgRoom.currentRoomId when mtgRoom.getCurrentRoom() returns null.

I hate Goko's framework so much.
Close notifications on next click.
Make showRoomChat (messages from "***") scroll chat area.
Merge branch 'master' into prerelease-bug-fixing. Increment to v2.3.4.5

Conflicts:
	config.rb
Merge pull request #141 from aiannacc/prerelease-bug-fixing

Prerelease bug fixing