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

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https://hg.mozilla.org/integration/gaia-central/rev/2634091381ac
Author: Dale Harvey <dale@arandomurl.com>
Desc: Bug 995954 - Dont show error if customisation file doesnt exist. r=yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/0f61eaf4d393
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #18236 from chirarobert/980271

Bug 980271 - deleteAllSms atom is not working

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https://hg.mozilla.org/integration/gaia-central/rev/f9f04537508c
Author: chirarobert <robert.chira@softvision.ro>
Desc: Bug 980271 - deleteAllSms atom is not working

Also updated getAllSms to work with the cursor itself.
Bumping manifests a=b2g-bump