no issue
- Added test cases to check edit permission on settings endpoints
- Added test to demonstrate owner-only being able to toggle members flag
- Permission check when editing settings `lab.members`
- Passed additional function to permissions to allow custom selection of unsafe attributes due to settings object structure.
- Fully implementing this check on controller level would be wrong architecturally and not that straight forward because we lack role data in "frame"
- Cleaned up test after moving default_content_visibility to it's own property