Bumping gaia.json for 4 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/cc8b862ffd2f
Author: Mason Chang <mason@masonchang.com>
Desc: Merge pull request #14284 from changm/bug943086

bug 943086.  Calender App Day, month, and week view scrolling portion with will-animate. r+ = benwa

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https://hg.mozilla.org/integration/gaia-central/rev/99f11ba20f3b
Author: Mason Chang <mchang@mozilla.com>
Desc: bug 943086. Day, month, and week view scrolling portion with will-animate

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https://hg.mozilla.org/integration/gaia-central/rev/354b3d14de95
Author: Mason Chang <mason@masonchang.com>
Desc: Merge pull request #14282 from changm/bug940734

bug 940734. Keeping scrolling portion of settings app as one layer. r+ benwa

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https://hg.mozilla.org/integration/gaia-central/rev/c3f849c8162f
Author: Mason Chang <mchang@mozilla.com>
Desc: bug 940734. Keeping scrolling portion of settings app as one layer