Rival Messenger - Working groupchat and more!!

I havent really had much time to focus on Rival Messenger lately, just little bits here and there.  I have managed to get a lot of functionality in over the last few weeks however. Groupchat is working, Notification center integration works, and other general cleanups and base functionality fixes.  There is still a lot to do with chat, re-joining existing chat sessions needs to be implemented, and I need to flush out the file attachment transfer stuff for inline images.

Overall I am VERY pleased with how Rival has turned out!