clear the in-memory object model when core data store is deleted. also don't re-create the persistent store upon successful deletion; only create it when it is accessed.
clear the in-memory object model when core data store is deleted. also
don't re-create the persistent store upon successful deletion; only
create it when it is accessed.

modolabs/Harvard-Tour-iOS,modolabs/Harvard-Tour-iOS,modolabs/Harvard-Tour-iOS,modolabs/Harvard-Tour-iOS,modolabs/Harvard-Tour-iOS