Bug 1035701 - [WebComponents][gaia_header] - check missing images
Bug 1035699 - [WebComponents][gaia_confirm] - check missing images
Bug 1035698 - [WebComponents][gaia_buttons] - check missing images
Bug 1035683 - [Music] - check missing images
Bug 1036191 - include font utils in import page
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
Bug 1041455 - Shrinking UI fix on Contact List after adding new contact
Merge pull request #22225 from michalbe/Bug-1041455-nfc-new

Bug 1041455 - Shrinking UI fix on Contact List after adding new contact
Merge pull request #22188 from sfoster/bug-1038630-tutorial-init-then-begin

Bug 1038630 - Split Tutorial init into init, begin 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
Bug 1042702 - Logging out while not registered leaks a wakelock. r=gerard-majax
Bug 1044406 - Fix not being able to tap a notification. r=mhenretty
Bug 1041710: ensure that wallpaper size always exactly matches screen size

when computing screen size for wallpaper pick activity use Math.ceil to get 854 instead of 853.5 for FWVGA

Unit tests for wallpaper_manager.js plus fix a broken bootstrap test

address review comments

address review comments

remove special low-tolerance case for PNG image comparison in image_utils unit test because it caused failures on TBPL
Revert "Bug 1045001 - Xfail Video recording tests because Bug 1044317"

This reverts commit f5df0d055439ace84cbd2c39258a51ab0db3db24.
Bug 1044406 - Use tap event dispatch, add notification tap integration test
Revert "Merge pull request #22188 from sfoster/bug-1038630-tutorial-init-then-begin" for Gu bustage

This reverts commit 6ab481f9cbe4be2f6f869ff60a585df236462762, reversing
changes made to d3bef98df6343948638d81acb5c6e42e5ab6010e.
Merge pull request #22089 from davidflanagan/bug1041710

Bug 1041710: Ensure that wallpaper images always exactly match the size of the screen r=mhenretty, timdream
Bug 1038988 - Use fast path to GPU for wallpaper
Merge pull request #22178 from mikehenrty/bug-1036191-import-headers

Bug 1036191 - include font utils in import page
Bug 1036821 - git commit hash isn't wrote to settings/resources/gaia_commit.txt on Windows
Bug 1039739 - Add some logging when writing the git commit id into the settings app;r=yurenju