Project work boards - make editing tasks from workboards work
Summary: This wasn't working. Create a little JS handler and server-side support for returning the Task in the "project card" format.
Test Plan: Edited tasks from the board - they worked!
Reviewers: epriestley
Reviewed By: epriestley
CC: Korvin, epriestley, aran, chad
Differential Revision: https://secure.phabricator.com/D8392