Add logging to models
Add model tests
Refactor for loop in test_create
Refactor urls into comparison app

closes #26
Add test_urls
Add docstrings to test_urls
Adjust existing logging configuration
Add logging for comparison.views
Add docstrings to test_models
Add optimized images
Replace yaml fixtures with json
Bugfix: Redirect to My List if save fails
Complete initial view tests
Cleanup formatting
Update pip requirements to Django 1.7
Remove South from INSTALLED_APPS in settings
Replace South migrations with Django migrations
Add debugger to settings
Update Twitter Bootstrap version
Add badges for Travis CI, coveralls.io, waffle.io