Update Ponder for handleRequest

Summary: Update all Ponder callsites.

Test Plan: New Question, New Comment, New Answer, Vote Up and Down

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T8628

Differential Revision: https://secure.phabricator.com/D13679