R1:22dc3c1be2e0

Allow public on Ponder Questions, History pages

Summary: Ref T9234, these should allow being publicly visible

Test Plan: log out, see page

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T9234

Differential Revision: https://secure.phabricator.com/D13952