-Deferred Shading now use a dynamics pass system
-Forward Shading is now capable of rendering more than three lights
(Multipass)
Former-commit-id: 74ed0b998d72aa9eb3bd2aab938a75985ebb2bf6
Separated LightManager
Added Sprite class
Added View class
Camera is no longer a SceneNode
Fixed Material not invalidating programs
Renamed CameraPosition uniform to EyePosition
Renamed VisibilityTest to FrustumCull
Former-commit-id: ff7fbe4d9b31a3c269baab0b48c6faa347a12161