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

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https://hg.mozilla.org/integration/gaia-central/rev/e29a8f244f38
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #16373 from comoyo/bug964739

Bug 964739 - Call resizeUI on keyboard if orientation changed since last time. r=RudyLu

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https://hg.mozilla.org/integration/gaia-central/rev/a5e78d55f7f1
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Bug 964739 - Call resizeUI on keyboard if orientation changed since last time
Bumping manifests a=b2g-bump