Summary: Fixes T4430. Basically does a little code massage from the new stuff in D8525 and application transactions to get this working. Adds a new controller to the subscriptions app to make rendering these pretty easy peasy.
Test Plan: Used my test task in D8525 to verify both add and rem versions of these dialogs worked correctly.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: epriestley, chad, Korvin
Maniphest Tasks: T4430
Differential Revision: https://secure.phabricator.com/D8540
Summary: Ref T4430. This just deploys it on the property lists. (Help on how to do translations better? I tried a more traditional pht('%s, %s, %s, and %d other(s)') but I think the string lookup assumes the %d comes as the second param or something?)
Test Plan: Made a Maniphest Task with a hojillion subscribers and noted the working dialogue. Also made a Pholio Mock with lots of subscribers and it worked.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: aran, epriestley, Korvin, chad
Maniphest Tasks: T4430
Differential Revision: https://secure.phabricator.com/D8525
