moved some of the logic that was defaulting template attributes in the controller over to the model. Fixed tests DMPRoadmap/roadmap#251 DMPRoadmap/roadmap#273

filled in test coverage gaps. Removed duplicate User.can_grant_api_to_orgs? method

some cleanup of irrelevant objects (e.g. removal of remaining OrganisationType)

added theme unit tests and started cleanup of remaining existing tests

uncommented out the email validator. added org unit tests.