drawing traffic lights
drawing arrows on street
Small changes, remove traffic light if not necessary. Swap Lane drawing
on horizontal street (startToEnd, endToStart was wrong)

Merge remote-tracking branch 'origin/dg-drawing'

Conflicts:
	src/ch/bfh/proj1/trafficlightsimulator/Lane.java
Merge branch 'master' of
ssh://git@github.com/splattner/bfh_proj1_trafficlightsimulator.git

Conflicts:
	src/ch/bfh/proj1/trafficlightsimulator/OptionPanel.java