merge
Roads know which traffic lights are attached to them
helper methods
Merge maartentrafficlight
Merged 'develop'.

Conflicts:
	core/src/main/java/trafficsim/factories/EntityFactory.java
Added lightToRoadConnection back
Merged the 2 creaate light methods
Advanced work on editor:
a) Added PointOfInterest interfacing.
b) MousePosition stores closest POI to mouse pointer.
c) Some minor changes to the InputProcessor Structures.
d) Rendering of POI's
Traffic Light awareness day
Corrected angles for left lights
Merged 'develop'.
Traffic light angles
Re-added spawn points, minor fix to steering
Finish cars_aware_of_traffic_lights
better then life lights