Update Legalpad to use modular transactions
Summary: Update Legalpad for modular transactions
Test Plan:
- New Document (no sign)
- New Document (individual)
- New Document (corp)
- Require Signature - get prompted to sign before I can do anything.
- Edit Documents
- Sign Documents
- Comment on Documents
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D17826