R1:1112419a975b

Support feed and email in Fund

Summary: Ref T5835. Make fund stories publish to feed and send email.

Test Plan: Made edits, etc., saw them in feed and outbound email.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5835

Differential Revision: https://secure.phabricator.com/D10677