Summary: Modernize PhortuneMerchant for Modular Transactions. Also changed the language of "Members" to "Managers", which I think fits better given the power/capability.
Test Plan:
- Create a new Merchant
- Test not filling in a name, see error
- Test removing myself, see error
- Edit an existing Merchant
- Add new managers
- Test removing myself, see error
- Replace Picture
- Update various fields, contact info, email, footer
- Verify transactions are now nice and pretty
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D17584
