Merge pull request #8 from nickpassarella/master

Added basic school and off_days models with basic association and validation tests. Added reference columns where needed.
Merge pull request #9 from nickpassarella/master

DeeDee's pull request with conflicts merged
Merge pull request #10 from nickpassarella/master

updated fixtures for Devise user model
brought back user tests, but commented them out until we better understand Devise