Bug 997701 - Create a new AudioContext each time the TonePlayer changes channel.
Bug 1000047 - Hardening the callscreen against a transition end race.
Bug 1002264 - [System] Remove System.publish function r=alive
Bug 1001370 - Add a new type of shared element (pages) for the build system
Bug 997053 - [Messages] Update @2.25x assets for attachment placeholders and move it to the correct place. r=julien
Bug 995350 - [SMS] - Display Save button for attached image file name having hidden directories ".gallery/". r=julien
Merge pull request #18416 from azasypkin/bug-997053-attachment-assets

Bug 997053 - [Messages] Update @2.25x assets for attachment placeholders and move it to the correct place.
Merge pull request #18718 from azasypkin/bug-995350-save-button

Bug 995350 - [SMS] - Display Save button for attached image file name having hidden directories ".gallery/". r=julien
Merge pull request #18721 from KevinGrandon/bug_1002264_remove_system_publish

Bug 1002264 - [System] Remove System.publish function
Bug 996569 - Improve performance of FB and other services contacts importation
Merge pull request #18742 from jmcanterafonseca/pages_as_shared_resource

Bug 1001370 - Add a new type of shared element (pages) for the build sys...
Merge pull request #18580 from etiennesegonzac/bug-997701-tone-player-channel

Bug 997701 - Set TonePlayer's channel when creating the audi element. r=gsvelto, rik
Merge pull request #18694 from etiennesegonzac/bug-1000047-callscreen-race

Bug 1000047 - Hardening the callscreen against a transition end race. r=rik
Merge pull request #18678 from crdlc/bug-996569

Bug 996569 - Importing FB contacts is soooooooooooooooooooo slow