Removed a save operation when a snapshot is restored and made the new scene operation forcefull so as to not bug the user unneccessarily.

Committer: Derick Dressel <derickd@magnesium.eefx.electricentertainment.com>
	modified:   hooks/scene_operation_tk-maya.py
	modified:   python/tk_multi_snapshot/snapshot.py
Removed the auto snapshot when a snapshot is restored.

made the 'newscene' operation in scene_operation_tk-maya.py forceful so as not to bug the user unneccessarily.