Legalpad - allow for legalpad documents to be required to be signed for using Phabricator
Summary: Fixes T7159.
Test Plan:
Created a legalpad document that needed a signature and I was required to sign it no matter what page I hit. Signed it and things worked! Added a new legalpad document and I had to sign again!
Ran unit tests and they passed!
Logged out as a user who was roadblocked into signing a bunch of stuff and it worked!
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T7159
Differential Revision: https://secure.phabricator.com/D11759