Entity achievement models added
Basic admin for entity achievements added.
Ommiting migrations in coverage report
Merge branch 'feature/achievements_app'
Django factory boy. Progresses dirty fields
Sending progress_state_changed signal whenever state is changed
Some migrations, skipping certain dirty fields
AChievement engine and celery task for achievement inspection
Merge branch 'master' of github.com:dmrz/gitality
Resolved merge conflicts