Remove unnecessary properties from COB and remove error in ThrottleSlider.qml
Add pooling support of trackSelections by updatin the V-Play library. The collider got active, but not updated its position to the new one so it got immediately removed although it did not collide at the new pos.
Add new images from Nico with better rails.
Merge branch 'master' of github.com:V-Play/AGJ13

Conflicts:
	qml/entities/TrackSection.qml
	qml/gui/ThrottleSlider.qml
Add obstacle creation again, was accidentally commented before.