Move AbstractHandler::checkLanguage() into a "request" filter.
Rename ClipboardView into ClipboardController and make it a subscriber.
Remove ViewInterface::show() completely.
Move BaseView::redirectHome() to ViewHelpers::redirectHome().
Move deprecated methods in BaseView to the end of the class.
Add method ClipboardInterface::removeById().
Pass the action event to the View::edit() method.
Handle clipboard actions in the ClipboardController.
Reworking the clipboard template.