Switching to NDEBUG preprocessor define
Tidy up cmake files
Remove some unnecessary checks

played around with some coin3d related settings to fix black-screen offscreen render bug
convenient init method

Removed some warnings on windows.

Conflicts:
	VirtualRobot/Visualization/CoinVisualization/CoinVisualizationFactory.cpp

removed renderOffscreen and get focal length

* cylinder support
* continuous joints
* visu array support

Visualization fix: applyDisplacement uses MM now

added VirtualRobot::init to set coin3d environment variables
added setTransparency method to Visualization