Restrict Audit buckets to just ApplicationSearch views
Summary: Fixes T9363. This drops empty buckets from dashboard panel context. Still see full results in Audit.
Test Plan: Create an "Active Audits" panel, add to Dashboard. See no commits found. Check Audit, see all buckets.
Reviewed By: epriestley
Maniphest Tasks: T9363
Differential Revision: https://secure.phabricator.com/D17545