Implement factory girl

Pivotal Tracker story Switch to FactoryGirl: https://www.pivotaltracker.com/story/show/75757844.
- add factory_girl_rails gem
- create factories for partners, provinces, sponsor_types, sponsors, statuses
- create model spec for sponsor_type using sponsor_types factory

All factories confirmed to create valid objects.
sounds like you don't really want a Factory for this, it would be better, as you have said, to seed the database, convert these models to constants or provide stubbed implementations of a `province` rather than a Factory