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

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https://hg.mozilla.org/integration/gaia-central/rev/0e252a887ce9
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #24992 from comoyo/bug1080357

Bug 1080357 - Only save activeLayouts in settings when changing layout. r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/d5a1e14cec1f
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Bug 1080357 - Only save activeLayouts in settings when changing layout
Bumping manifests a=b2g-bump