@bender-tags: 4.9.0, feature, 932
@bender-ui: collapsed
@bender-ckeditor-plugins: sourcearea, wysiwygarea, floatingspace, toolbar, imagebase, link, htmlwriter, elementspath, easyimage

Check if integration with link is working:

* Widget with link inside is properly upcasted.
* Widget could be linked.
* Widget could be unlinked.
* Link in the widget is editable.
* All attributes defined in link dialog are bound to the link.
