Updates macosx launcher to skip -psn parameters as they prevents the application from starting.
Adds new MUC bundle to handle the chat rooms. Moves ChatRoomWrapper,
ChatRoomList and ChatRoomProviderWrapper classes from GUI to the MUC
bundle. Moves most of ConferenceChatManager methods in  MUCService.
Import latest MUC-related commits to hopefully fix my dodgy deployment.

Merge branch 'jitsi/master'

Conflicts:
	lib/felix.client.run.properties