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.

Reviewers: ptarjan

Reviewed By: ptarjan

Maniphest Tasks: T13546

Differential Revision: https://secure.phabricator.com/D21355