GWT_Client: Room selection improvements:
- Double click on a room, centers and zoom over the room with animation
- MouseOver a room Highlights it
- Unify the size of the canvas using the parent.
GWT_Client: Several improvements
- Fix the calculations to zoom to center
-Change from timer to Schedule on the main thread.
-Only refresh once for each layer the context
-Fix rotation angle from degrees to radias
GWT_Client: Handle mouse events:
- Mouse wheel  zoom in/out.
- Drag is working