Merge remote-tracking branch 'origin/master' into task_RemovePageBrowser

Classes/Controller/BackendController.php

Classes/Hooks/PageLayoutController.php

Classes/Service/LicensingService.php

Classes/ViewHelpers/Backend/ControlViewHelper.php

Classes/ViewHelpers/Backend/TranslationLinksViewHelper.php

Configuration/Backend/AjaxRoutes.php

Resources/Private/Layouts/Backend.html

Resources/Private/Partials/Backend/LicenseBanner.html

Resources/Public/JavaScript/Backend.js

composer.json

ext_emconf.php