IPHONEAPP-666

Fixes an issue where the observer would not be added

Signed-off-by: Blake Skinner <bskinner@mit.edu>
IPHONEAPP-666

Move the core data operations onto a (slightly more) consistent background thread. This is a band-aid fix until the Building Services module can get a much needed overhaul to better use the CoreData framework.

Signed-off-by: Blake Skinner <bskinner@mit.edu>