Bug 1016221 - [Collection App] Mozilla CDN Backgrounds for Collection icons
Bug 921050 - Send email in the background.
Update README.md
Merge pull request #19516 from mcav/async-send

Bug 921050 - Send email in the background. r=asuth
Bug 1017002 - [Homescreen] Disable intermittent Marionette JS failure on Travis: 1) Homescreen navigation > Going to the homescreen and back to a warm app: AssertionError: we got 2 reflows instead of 0
Merge pull request #21647 from tanay1337/master

Update README.md r=kgrandon
Merge pull request #21542 from EverythingMe/1016221-cdn-bgs

Bug 1016221 - [Collection App] Mozilla CDN Backgrounds for Collection ic...