Fixed dust and lights/shadows following camera

This gets back the functionality for the dust and shadows following the camera. This will have to be reworked in the future for replication. For now, this is fine.

@kadst43 @eric79 @AmbientOSX @ajiraffe 
It's in the yaml, so it's where it needs to be. Only other option is to put it in the scene yaml. Would that be better?