Organized imports and added signals for updating Item and Collection stats. Fixes #205
Changed test data for appropriate naming of Items, Collections and Projects. Modified a couple of test cases due to the auto updating of object stats. Fixes #205
Fixed bug of stats not updating, and temporarily disconnected signals when updating the entire system stats. Fixes #205
Fixed test cases.
Replaced print and pprint statements with log statements
Merge pull request #211 from gwu-libraries/t205_auto_update_stats

T205 auto update stats