Don't error out if a datagrid is sorted on a missing column.

Review Request #5688 — Created April 9, 2014 and submitted — Latest diff uploaded

Information

Djblets
master
c23e0b4...

Reviewers

At some point we had mistakenly marked the "people" column as sortable, which
doesn't really make sense. We've since fixed this, but if users had "people"
left in their sort preferences, it would cause an uncaught exception. This adds
a none-test and logs the failure.

Could load /r/ using my old db.