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

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https://hg.mozilla.org/integration/gaia-central/rev/eb082ef647ce
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #13479 from alivedise/bugzilla/934908/display-homescreen-correctly

Bug 934908 - Activity chaining for homescreen, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/360dad6b537f
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 934908 - Manage activity chaining for homescreen correctly