Update Phortune for handleRequest
Summary: Updates Phortune controllers for handleRequest
Test Plan: New Invoice, new merchant, new subscriptions, manual bill, pay bill, anything I could find to test.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T8628
Differential Revision: https://secure.phabricator.com/D13768