adds first two tests for dashboard, including logic to deal with django sessions and mocks for the canvas sdk
adds tests for the get_uninstalled_treatmets function
moves common logic into base class and constants
creates APIReturn mock object to simplify test config
adds tests to creating and editing treatments
pulls common patches into setup
changes manage.py to use test settings in order to disable django logging durring tests
adds tests for user role and tool config
removes inaccurate pieces from readme
Merge branch 'feature/tests' of github.com:penzance/ab-testing-tool into feature/modules_integration
Updates test to patch views call of the get items api