Herald - add application search for transcripts

Summary: this diff also makes the "test console" appear with the main search nav *and* updates application search to use the page title as the crumb rather than just search. Fixes T4399.

Test Plan: queried for transcript ids - success! queried for TX and MX - success! saved the TX and MX query and it worked again!

Reviewers: epriestley

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Maniphest Tasks: T4399

Differential Revision: https://secure.phabricator.com/D8297