Clean up UsersController#index tests in the users_controller_spec
Fix admin check in Users#index and remove unneeded comments in users_controller
Remove unneeded warden stub from users_controller_spec
Fix wording in one spec in users_controller_spec.rb
fixing broken application for user index view ad part of checking new acceptance test
merging in latest develop stuff with Daniel's refcatoring of users controller and spec
refactored feature to make it more decaritive
pulled authorize logic out to application controller