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

========

https://hg.mozilla.org/integration/gaia-central/rev/593d1d8fb040
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Revert "Bug 1044231 - Xfail test_everything_me_launch_link.py a=testonly r=me"

This reverts commit e95ac19a89b858528031a90d688bf39ff7dcf0a3.
Bumping manifests a=b2g-bump