R1:84742a94db13

Restore missing feed rendering for Maniphest points transactions

Summary: See downstream <https://phabricator.wikimedia.org/T166321>. These got dropped in refactoring, or maybe never existed.

Test Plan: {F4977212}

Reviewers: chad

Reviewed By: chad

Differential Revision: https://secure.phabricator.com/D18018