Conpherence - fix fatal if you don't have conpherences

Summary: Fixes T7721. Looks like this got renamed at some point but skipped. Also, change the true / false idx look ups to correct integers here since there's a warning in the error logs in this case without it.

Test Plan: made new user. loaded up conpherence and it worked. tried all the links too for good measure and they worked

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T7717, T7721

Differential Revision: https://secure.phabricator.com/D12243