R1:a9e8e0352448

Modernize Ponder Search

Summary: Use new search hotness.

Test Plan: Tested searching open, closed, answered, by project, etc.

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: r.ksiazek87, epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D13667