Update django version in requirements.txt

refs #17139
Remove admin classes

refs #17139
Change model tests to assertEqual
Update tests for Django 1.7; update ModelForms
Begin work on logout tests
Write logout tests. Will need Feature 17169 before these tests work
Begin work on logout tests
Allow user to logout without playing Hotel California
Merge branch 'feature/16959' of github.com:osu-cass/whats-fresh-api into feature/16959

Conflicts:
	whats_fresh/whats_fresh_api/tests/views/test_logout.py