FIX::create group issues
ADD::display players in rooms
ADD::functions for entering an existed room
Merge branch 'keweihu/multiplay' into wangyujue/multiplay

Conflicts:
	LeapBind/src/SMA/GameManageBehaviour.java
	LeapBind/src/SMA/GetListGameBehaviour.java
	LeapBind/src/SMA/GetListGroupBehaviour.java
	LeapBind/src/SMA/UserAgent.java
	LeapBind/src/SMA/UserMain.java