* Closes#16137: Remove is_staff boolean from User model
* Remove default is_staff value from UserManager.create_user()
* Restore staff_only on MenuItem
* Introduce IsSuperuser API permission to replace IsAdminUser
* Update and improve RQ task API view tests
* Remove is_staff attribute assignment from RemoteUserBackend
* Fixes: #18568 Update mkdocstrings and adapt config
* Fixed some output formatting errors
When trying to compare the output from "mkdocstrings[python-legacy]==0.27.0" and
"mkdocstrings[python]==0.28.2" I encountered some HTML errors:
- <div> inside a <p>
- unescaped non-tags <pk>
* Change references to admin UI to Admin menu
* Change also for reports and custom scripts
* Minor tweaks to help text flow better
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Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>