Added relationships model, db model and associations
Added relationship model validations
Added test for following and unfollowing user and following utilities
Added testing for reverse relationships
Added tests and content for controller authorization and resonses
Added tests and content for status feed
Added final implementation of user and news feed
Added tests for destroying relationships
Added refactoring of relationships controller and ensured a passing test suite
Ex. 11.5.3. Added one refactoring, but there looks like there is an opportunity for more.
Added tests for stats page. Ex. 11.5.4