Commence translation controller refactoring

Move the `create` method to a module that extends ActiveSupport::Concern
Refactor: move `edit` method to Translation Concern
Refactor: move `update` method to Translation Concern
Refactor: move `translation_locale` method to Translation Concern
Refactor: move `destroy` method to Translation Concern
Refactor: abstract internals of `notice_message`
Refactor: remove temporary helper method from Translation Concern
Refactor: move `index` method to Translation Concern
Refactor: consolidate filters that always run into one method