Promote 2018 Week 19

Summary:
Promote 2018 Week 19

• Had to update patch 1446973_1.patch as it would no longer apply

Test Plan: Make sure the mozilla/mozphab image hash matches what is on hub.docker.com

Reviewers: ckolos, ckolos_admin

Reviewed By: ckolos_admin

Bug #: 1461721

Differential Revision: https://phabricator.services.mozilla.com/D1285