The New Review Request page's commit list was expecting a valid date for

each commit, and crashed if one wasn't provided. This would occur if dealing

with an inaccessible commit on Subversion.
We now set a flag if the commit is inaccessible, and change our presentation

for that commit. The commit will say "Revision XYZ (not accessible on this

repository)", and won't be available to post for review.

Hard-coded all the data for a commit to being blank, and tried viewing the

commit list. Saw that the data, while useless, didn't look flat-out broken.
Tried posting inaccessible commits for review, and couldn't. I could still

post accessible commits.