* add extended UserController and new route to module.config.php
* add export logic to UserController
* add translation
* overwrite list.phtml
** add export button
** add styling

* rename translation token
* add zdf_access trans token

* configure role priority and display order
* handle permission revoking on blocking or deleting user in fidis:core
* see refs 21395 & 22839
* add translations for usage of zdf_access
* new translation for permission status lable
* zdf_access only for university staff, no librarians
** use UserCreateFormInputFilter

* add inheritance if needed
* dependent to 16852