* fix: Don't allow group chair to change group parent (#6037)
* test: Fix test_edit_parent_field, add test_edit_parent (whole form)
* test: Verify that the chair can't circumvent the system to change the group parent
* fix: 403 if user tries to edit an unknown or hidden field
* fix: Give edwg GroupFeatures a parent type
This tracks a change that was made directly in the production database
to fix the immediate cause of #6037.
* Empty commit to trigger github unit test