Move repository actions (notify, autoclose) to new UI

Summary: Ref T2231. Brings "Notify/Publish" and "Autoclose" to the new UI.

Test Plan: See screenshots.

Reviewers: btrahan, chad

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2231

Differential Revision: https://secure.phabricator.com/D7402