Bumping gaia.json for 3 gaia-1_3 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/b31e019bb764
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Bug 948195 - Marketplace is incorrectly listed in the Games bubble in the Search screen [r=ranbena]

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https://hg.mozilla.org/integration/gaia-1_3/rev/f6d4aaf2b920
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Revert "Bug 948195 - Marketplace is incorrectly listed in the Games bubble in the Search screen [r=ranbena]"

This reverts commit c93ee10134391a27f469f073f42809cb9bcbcacb.

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https://hg.mozilla.org/integration/gaia-1_3/rev/48e56349ff18
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Bug 948195 - Marketplace is incorrectly listed in the Games bubble in the Search screen [r=ranbena]

Conflicts:
	apps/homescreen/collections/games/icon.png
	apps/homescreen/collections/games/icon@1.5x.png
	apps/homescreen/collections/games/icon@2x.png