Redid a lot of stuff to do with the animation system and animation format.
Merge branch 'master' of https://github.com/ill/illEngine

Conflicts:
	Graphics/serial/Model/Mesh.h
	Graphics/serial/Model/ModelAnimationController.cpp
	Graphics/serial/Model/ModelAnimationController.h
	Graphics/serial/Model/Skeleton.cpp
	Graphics/serial/Model/Skeleton.h
	Graphics/serial/Model/SkeletonAnimation.cpp
	Graphics/serial/Model/SkeletonAnimation.h