Summary: Moves Phriction to use PHUIDocumentViewPro

Test Plan: Read lots of documents, tablet, mobile, and desktop. Check ToC, non ToC, Edit a Maniphest Task, New Phriction Document, edit Phriction Document.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T9826

Differential Revision: https://secure.phabricator.com/D14399