Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/a4ef800576e5
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #14704 from KevinGrandon/bug_826274_annoying_sound

Bug 826274 - Disabled lock screen sound still plays r=timdream

========

https://hg.mozilla.org/integration/gaia-central/rev/221a6c457f11
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 826274 - Disabled lock screen sound still plays
Merge mozilla-central to b2g-inbound
Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/2cadc5d69c72
Author: Gregor Wagner <anygregor@gmail.com>
Desc: Merge pull request #14752 from gregorwagner/back

Travis bustage fix.

========

https://hg.mozilla.org/integration/gaia-central/rev/9005e1961498
Author: Gregor Wagner <anygregor@gmail.com>
Desc: Travis bustage fix
Bug 901457 - [sms][mms] We need a property for the "sent" timestamp (part 1, IDL changes). sr=sicking f=vicamo
Bug 901457 - [sms][mms] We need a property for the "sent" timestamp (part 2, implementation). r=vicamo
Bug 949434 - Australis' overflowable toolbar might have race condition causing test failures, r=jaws

--HG--
extra : rebase_source : 2af293e19a8f91c3cebc0dc24b617e67ae1534b2
Bug 923548 - fix Australis download glow assets, r=jaws
Merge mozilla-central to fx-team
Merge mozilla-central to fx-team
Bug 930641 - Remove the social.allowMultipleWorkers preference, r=mixedpuppy.
Bug 951260 - Social Status button icon stretched on retina screen, r=mixedpuppy.
Bug 950656 - The separator string between the headers name and value isn't shown, r=past
Bug 830344 - Part 1: Remove the lazy append mechanism in the variables view, r=past
Bug 830344 - Part 2: Implement pagination when expanding objects with lots of properties, r=past
Bug 951674 - Vertical splitter isn't shown for the Events tab, r=fitzgen
Bug 951694 - Sources pane can overlap content over the source editor, r=fitzgen
Bug 899276 - Don't collect/save private tabs. r=ttaubert
Bug 935417 - Better word wrapping in the css rule view. r=harth
Bug 948894 - Move inline scripts for about:apps into AboutApps.js. r=mleibovic
Bug 950667 - DevTools CSS - Use an attribute instead of .highlighted class for styling tabs like the paused debugger. r=bgrins