Bug 989810 - [User Story] Email - Quick-to-Top action
Bug 1032000 - Fix jshint error for build/config/payment-prefs.js
 Bug 1038630 - Split Tutorial init into init, start methods.

* init early in FTU, call start from 'Get started' button
* Dont wait to loadConfig in ftu AppManager
* Add 1.3..2.1 and 1.4..2.1 upgrade steps for easier testing on master
* Remove unused ensureConfig
* Fix tutorial init/start logic in FTU AppManager
* Add jsdocs for Tutorial
* Remove surplus Tutorial.init call from UIManager
* Update FTU UIManager mock
Bug 915643 - [Email] Clear old notifications once Notification.get is available
Bug 1042116 - Add bookmarks provide r=kgrandon r=daleharvey
Merge pull request #21356 from jrburke/bug915643-email-clear-notifications

Bug 915643 - [Email] Clear old notifications once Notification.get is available r=asuth
Merge pull request #22274 from sfoster/bug-1038630-tutorial-redux

 Bug 1038630 - Split Tutorial init into init, start methods. r=fcampo
Merge pull request #22183 from jrburke/bug989810-email-top-action

Bug 989810 - [User Story] Email - Quick-to-Top action r=mcav
Bug 1045922 - [email] quick tap on message in list after first load sometimes does not work
Merge pull request #22281 from jrburke/bug1045922-email-quick-tap

Bug 1045922 - [email] quick tap on message in list after first load sometimes does not work r=mcav
Bug 1032024 - Fix jshint error for build/preferences.js
Merge pull request #22236 from xfq/Bug1032000

Bug 1032000 - Fix jshint error for build/config/payment-prefs.js r=@yurenju
Merge pull request #22286 from xfq/Bug1032024

Bug 1032024 - Fix jshint error for build/preferences.js r=@yurenju