Replace Differential hard-coded status "<select />" with tokenizer
Summary:
Ref T2543. This updates the UI control in the web UI. Also:
- This implicitly makes this queryable with the API (`differential.revision.search`); it previously was not.
- This does NOT migrate existing saved queries. I'll do those in the next change, and hold this until it happens.
- This will break some existing `/differential/?status=XYZ` links. For example, `status=open` now needs to be `status=open()`. I couldn't find any of these in the upstream, and I suspect these are rare in the wild (users would normally link directly to saved queries, not use URI query construction).
Test Plan: {F5093611}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T2543
Differential Revision: https://secure.phabricator.com/D18393