Implement room cycling from room buttons

[tonihele]

Implement room cycling from room buttons. Similar to creature icons. The room icons should also let the player to cycle through the build rooms. Also was there a tooltip saying how much rooms you have. This is something that the client also has knowledge of. It is just not so refined at the moment. MapViewState might help. There is the PlayerRoomController as well... Hmm, might change if we make rooms as entities... Well. We should discuss.