Merge pull request #12619 from EverythingMe/923097-save-to-homescreen

[Bug 923097] Fix add to homescreen [r=crdlc]
Merge pull request #12546 from EverythingMe/910354-add-collections

Bug 910354 - [e.me][feature] Add Collections
Bug 917339 - [Clock] Timer Sound should use same input type as Alarm Sound

r=jugglinmike
Bug 911544 - [e.me][feature] Support offline-ready [r=crdlc]