Fix audit counts in some queries

Summary:
Prior to D5140, "PhabricatorAuditCommitQuery::STATUS_OPEN" was defined as "concern only". This didn't really make sense; we redefined it to "concern or audit required".

However, a couple of queries needed to be updated since they really meant "concern" even though they said "open".

I also switch the order of problem commits / audit required on the Audit homepage to be consistent with the bubbles on home.

Test Plan: Looked at home, /audit/.

Reviewers: chad

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D5162