Bumping gaia.json for 2 gaia-1_3 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/87624a5a8d4d
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #14730 from davidflanagan/bug936353-v1.3

Bug 936353: when confirming a pick from the camera, display the EXIF preview r=wilsonpage

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https://hg.mozilla.org/integration/gaia-1_3/rev/c67ebc5bd90d
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Bug 936353: when confirming a pick from the camera, display the EXIF preview, not the full-size image
(cherry picked from commit 21d0c957a3bd47d1c4fdeb2c7c24fd7f1d11cb7a)
Bug 950800 - Honor Composer2D toggling on the fly. r=nrc, a=1.3+

Now you can toggle the hardware composer on/off at any point without restarting B2G.
Bug 952006 - [RTSP][Video] System crash while RTSP reconnecting. r=sworkman, a=1.3+
Bug 956322 - Trying to download an MMS fails with 'Missing SIM card'. r=vicamo, a=1.3+
Bug 952371 - Part 1: idl changes - [DSDS] mozMobileconnection.lastKnownNetwork and .lastKnownHomeNetwork aren't working. r=hsinyi, a=1.3+
Bug 952371 - Part 2: dom changes - [DSDS] mozMobileconnection.lastKnownNetwork and .lastKnownHomeNetwork aren't working. r=smaug, a=1.3+
Bug 952371 - Part 3: ril implementation - [DSDS] mozMobileconnection.lastKnownNetwork and .lastKnownHomeNetwork aren't working. r=hsinyi, a=1.3+
Bug 952371 - Part 4: tests - [DSDS] mozMobileconnection.lastKnownNetwork and .lastKnownHomeNetwork aren't working. r=hsinyi, a=1.3+
Bug 956907 - Fix the state of the icons used for marks. r=markh, a=bajaj
Bug 950719 - Update Bing search icon to 32x32. r=mfinkle, a=bajaj