Engine::subsystems:object: some smaller fixes, basically a Object3DModel can have a world transform (it always could, but was not handled), maybe the name now is misleading
Environment: dont store triangles which have 90° between y axis and triangle normal, not sure if I ever will use this system as one can just go with normal collision bounding volumes for terrain as well (should just do a Triangle bounding volume which supports a set of triangles)