Added Spawner/Teleporter to Map

But did not add their entity classes, so loop breaks.  Actually kind of cool looking, haha.
Added to playerClass

Added categories to its entityDef and reviewed all of the code here.
Added Teleporter and Spawner

Reviewed both files, some small edits.  Also added to assetloader.
Teleporter/Spawner/SpawnPoint

Seems like they're all working, but now the player spawn is broken.