Fix group associations
Add ease of use module for db objects
Fix and add switches to make_db
Clean up make_db using db_session
Add User backref to groups/models
Fix idiosynchrasies in event/model.py
Redo event to group backref and add test data
Rename Students to Persons and expand
Fix Membership Assoc object
Fix backrefs on memberships
Add association proxies for membership
Add Device
Rename swipe to swipes
Finish database, all models working
Merge pull request #28 from mdmoss/master

Database complete
Fix missing import and json responses