Summary:
Ref T4195. Like the previous diffs, these both create a useful log and give us an object to hand off to Herald.
Surface this information in Diffusion, too, and clean things up a little bit.
Test Plan: {F87565}
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4195
Differential Revision: https://secure.phabricator.com/D7718
Summary: For Diffusion's auditors list, and Differential's reviewers list (eventually). An inline option might make more sense in Differential, but I want to use this in Diffusion first, and we need more information there.
Test Plan: {F51424}
Reviewers: chad, btrahan
Reviewed By: btrahan
CC: aran
Differential Revision: https://secure.phabricator.com/D6559
