Fix 'bin/db_reset' to use migrations
Merge pull request #31 from reciprocity/feature/fix-db-reset

This fixes compatibility between 'db_reset' and 'db_migrate'
Lay the foundation for RBAC, catching up with develop branch.
Add a way to assert user permissions as a header for the noop login
manager.
Merge remote-tracking branch 'origin/feature/rbac_clean' into feature/rbac_clean

Conflicts:
	src/ggrc/rbac/permissions_provider.py
	src/ggrc/services/common.py