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

========

https://hg.mozilla.org/integration/gaia-central/rev/ec308b8ac579
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Revert "Bug 1028351 - [Vertical] Vertical App name should be localized r=tchevalier r=lightsofapollo"

This reverts commit 8abd97917689c27041cc536930cac06e58715db5.
Bumping manifests a=b2g-bump