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

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https://hg.mozilla.org/integration/gaia-central/rev/c44565ed6a5e
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Bug 1025565 - Only render the necessary icons when dragging. r=kgrandon

Dragging an icon previously caused all icons from the first icon that needs
re-rendering to the end of the grid. This makes sure that only the icons
that are affected by the rearrangement are re-rendered.

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https://hg.mozilla.org/integration/gaia-central/rev/ba141f1c6a42
Author: gitmai <mri@tid.es>
Desc: Merge pull request #20356 from gitmai/bug-876815-settings-headers

Bug 876815 -[usage] don't mention phone calls in settings sub-header
r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/426778e0c748
Author: mai <mri@tid.es>
Desc: Bug 876815 -[usage] don't mention phone calls in settings sub-header
Bumping manifests a=b2g-bump