Use ApplicationPHIDs to power object name typehaead results

Summary: Ref T2715. When you type "T12", etc., into the search box, use ApplicationPHIDs to try to find an object name match.

Test Plan: Typed "T12", "rP", "Q11", etc.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2715

Differential Revision: https://secure.phabricator.com/D6618