Pholio - finish off making public (ie not logged in) views work

Summary: Fixes T2652. Did some testing post T2691 to see if I could close this and noted an error in the JS if you view the page not logged in. This fixes that error. Everything else I can think of seems to work...? :D

Test Plan: played around with a mock not logged in and got sensible interactions and no errors

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T2652

Differential Revision: https://secure.phabricator.com/D6438