Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_0/rev/479e7c656ba7
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Revert "Bug 1084224 - [Midori 2.0][Contacts][Facebook]keep logging out interface always when clickX"

This reverts commit 71bb3c6a743d15d191b05e2d11f1eba759de7e53.
Bumping manifests a=b2g-bump