Optionally, remove chatbar from local chat floater.

FloaterChatBarlessRect keeps the size of this separate, for those who want to switch by mood.
ShowLocalChatFloaterBar toggles this.
Show local chat bar in floater entry added to Adv. Chat prefs.
floater_chat_history_barless.xml added for this.
Option to Disallow communicate shortcut opening detached friends list

Added CommunicateSpecificShortcut
Added checkbox to Text Chat preferences
Once more change the behavior of minimizing new chats in open in separate floater mode, to be a little more truthful.