Fix Phortune so it allows users to create their accounts implicitly

Summary: This is a small fix for Phortune so that policies don't prevent the user accounts from being implicitly created when they first visit Phortune.

Test Plan: Visited Phortune and it worked.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley

CC: Korvin, epriestley, aran

Differential Revision: https://secure.phabricator.com/D7758