Bumping gaia.json for 4 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/e0fbf1b40358
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #12702 from AndreiH/bug_923662

Bug 923662 - Fix locator _outgoing_call_locator for test_call_log_all_ca...

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https://hg.mozilla.org/integration/gaia-central/rev/f6447085c388
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 923662 - Fix locator _outgoing_call_locator for test_call_log_all_calls.py

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https://hg.mozilla.org/integration/gaia-central/rev/1d11f8a9875f
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Merge pull request #12709 from EverythingMe/924090-dnd-trigger

Bug 924090 - [e.me] Everything.me load sequence is not triggered when dr...

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https://hg.mozilla.org/integration/gaia-central/rev/e1e48e0cc73e
Author: Amir Nissim <amirn@everything.me>
Desc: Bug 924090 - [e.me] Everything.me load sequence is not triggered when dropping an app on a collection [r=crdlc]