Don't check if anonymous user can update MR
requested to merge 799-viewing-a-mr-with-approvals-with-an-anonymous-user-results-in-error-500 into master
Closes #799 (closed). Interestingly, I think previously we showed the 'Approve MR' button to anonymous users when an MR had approvals from anyone allowed, but we didn't blow up with a 500 error.