I want to use Scene without using ScenePanel

1. Eliminated the v2w and w2v transformations. All of our games are
pixel-based, currently, so it wasn’t doing anything.
2. Modified SceneSwitcher. This wasn’t being used, so if it is used in
the future it will have to be handled differently from in the past. I
think the SceneSwitcher object will be better not not as member of the
Scene, though it will need to be added to the scene objects.