Add more "RepositoryRef" legacy status mappings
Summary: Ref T13546. The old "differential.query" call is still used to fill refs when all we have locally is hashes. Add some mappings to improve the resulting refs.
Test Plan: Viewed "arc branches", saw statuses colored more consistently.
Reviewed By: ptarjan
Maniphest Tasks: T13546
Differential Revision: https://secure.phabricator.com/D21355