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

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https://hg.mozilla.org/integration/gaia-central/rev/c1c2e2f8bb3b
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Revert "Merge pull request #13945 from timdream/keyboard-pref-off"

This reverts commit 3a0d61d3f07081db8952990aed7cee8d15dd628e, reversing
changes made to 04ae2d03ff876ffc03a2742034ab9ce89d721a14.

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https://hg.mozilla.org/integration/gaia-central/rev/291de084512b
Author: Ben Kelly <bkelly@mozilla.com>
Desc: Merge pull request #13925 from wanderview/contacts-group-overflow-3

Bug 937291: Limit overflow of each group list.  r=arcturus

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https://hg.mozilla.org/integration/gaia-central/rev/4df321569c54
Author: Ben Kelly <ben@wanderview.com>
Desc: Bug 937291: Limit overflow of each group list.