Hide overflow chatrooms when adding new ones.

ACE-62
Refactored focusOnChatRoom function.
Removed id from $uiDom div tag
ACE-62
Working on ChatRoomManager.redraw function

ACE-62
Working on redraw function
ACE-62
Temporarily remove redraw method to merge in Billy's code

ACE-62
Merge remote-tracking branch 'origin/hide_off_screen_chatrooms_ACE-62' into hide_off_screen_chatrooms_ACE-62

Conflicts:
	org.ualerts.chat.web/src/main/webapp/assets/js/ChatRoomManager.js
Fix bug: non-right-most chatroom windows can now send messages.

ACE-62
Revert back to last commit's code. False bug.

ACE-62
Merge pull request #32 from ualerts-org/hide_off_screen_chatrooms_ACE-62

Hide off screen chatrooms ace 62