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

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https://hg.mozilla.org/integration/gaia-central/rev/e9448a855fed
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #24839 from viorelaioia/bug_1075513

Bug 1075513 - Update test_sms_contact to send the SMS message

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https://hg.mozilla.org/integration/gaia-central/rev/596157e2eec6
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1075513 - Update test_sms_contact to send the SMS message

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https://hg.mozilla.org/integration/gaia-central/rev/4c91447f2748
Author: BavarianTomcat <tomcat@mozilla.com>
Desc: Revert "Bug 1053703 - Merge pre-app.js, app.js and post-app.js to one javascript file r=gduan" for suspicion of breaking reftests

This reverts commit 35ec5fd0cafef0b2738578d2f5cf350b62202336.
Bumping manifests a=b2g-bump