[gh-696] Make Primary Base URL disabled for anyone but admin
No one else really needs to touch it - they just screw it up anyway.
On Saturday, March 30 from 8:00 AM to 9:00 AM, we will be performing an upgrade of the GitLab system. During that time, GitLab and git services on git.unl.edu may be unavailable.
No one else really needs to touch it - they just screw it up anyway.