added require statement for test_helper into all functional tests

commented out public dmp tests since we're commenting out that functionality for now

started switching I18n references in test files to Fastgettext

fixed issue with static_pages_controller_test

added theme unit tests and started cleanup of remaining existing tests

switched visibility over to an enum. updated the project objects accordingly. Added some more unit tests. Updated locale files with visibility text

fixed functional tests on static_pages controller

finsihed adding visibility to project details page as radio button options. Updated public DMPs page to work with new visibility and moved it to the static pages controller since it falls outside of normal security. Updated all locale files accordingly