transfer features from cg2sandbox
* add axis aligned bounding box
* add lazzy camera
* add navigation math
* rename trackball
* add world-in-hand navigation
Merge branch 'master' of https://github.com/hpicgs/glow.git
apply cg2sandbox shader fix (mac issue)
Merge branch 'master' of github.com:voxelinc/glow into voxellancer

Conflicts:
	CMakeLists.txt