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

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https://hg.mozilla.org/integration/gaia-central/rev/6594cfcf029e
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: Merge pull request #11888 from KevinGrandon/bug_908949_settings_dom

Bug 908949 - Move settings DOM into indivdual files r=kaze

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https://hg.mozilla.org/integration/gaia-central/rev/2fc28f42e2ab
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 908949 - Move settings DOM into indivdual files.