Lobby Screen introduced and its MVC connected to evBus.
Extracted interface from GameScreen. Not all screens are games!
Get ready for conflicts!
Merge branch 'alljoinin' of https://github.com/tortal/IT2-LP1-Tendu.git
into alljoinin

Conflicts:
	Tendu/src/it/chalmers/tendu/Tendu.java
	Tendu/src/it/chalmers/tendu/controllers/ModelController.java
	Tendu/src/it/chalmers/tendu/gamemodel/GameLobby.java