Bug 1035708 - [Bluetooth] - remove unused images
Bug 971554 - [System2] Instantiable SoundManager
Bug 1034210 - send correct keycode for non-latin IME.
Merge pull request #18007 from huchengtw-moz/system2/Bug_971554-reland-3

Bug 971554 - [System2] Instantiable SoundManager, r=alive
Bug 1038024 - [Camera] Update camera to use gaia-icons v0.2.0
Merge pull request #21660 from wilsonpage/1038024

Bug 1038024 - [Camera] Update camera to use gaia-icons v0.2.0
Merge pull request #21602 from RudyLu/keyboard/Bug1034210_commit

Bug 1034210 - send correct keycode for non-latin IME.
r=timdream.
Merge pull request #21655 from pivanov/bug-1035708

Bug 1035708 - [Bluetooth] - remove unused images
Bug 994571 - [System2] Remove the pattern to return self in start()

* Remove 'var module = new Module().start()' pattern.
* Remove 'return this;' expression in start() function definitions.