working on Zigbee (CarClientManager) <-> Server <-> world (car detected by camera) integration.

Current issue to solve during debugging of WorldSimulator and Server implemenation: CarClientManager is instantiated twice and singleton is not shared among the two applications.
bugfix: send 'all cars detected' message with a message id.
Start server on WorldSim startup
different default map size
different car scaling
improved 'add car' positioning in world simulator
cleanup
game start with simulators (player and camera simulator) now possible.
Merge branch 'zigbee' of github.com:lumannnn/AudioRacer into zigbee
Merge remote-tracking branch 'origin/zigbee' into server-broadcasting

Conflicts:
	AudioRacer-Server/src/at/fhv/audioracer/server/Main.java