Provide PhabricatorSavedQuery to renderResultsList()
Summary: This allows the SavedQuery to modify what the result list looks like (e.g., include display flags and similar).
Test Plan: Looked at some ApplicationSearch apps.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T2625
Differential Revision: https://secure.phabricator.com/D6346