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

========

https://hg.mozilla.org/integration/gaia-central/rev/4d338b910597
Author: KWierso <kwierso@gmail.com>
Desc: Revert "Merge pull request #17128 from vingtetun/bug977680" for gaia-unit bustage

This reverts commit 6a70c1909a04f25f370502aebc7b6acfdf6e7c72, reversing
changes made to 0bd8cd3ec44de6289da066685e1a2aed805deb91.
Bumping manifests a=b2g-bump
Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/7735241bad95
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #17172 from jrburke/bug966147-email-notification-click-close

Bug 966147 - Email Notification doesnt go away when I click on it r=asuth

========

https://hg.mozilla.org/integration/gaia-central/rev/4ac78c80b474
Author: jrburke <jrburke@gmail.com>
Desc: Bug 966147 - Email Notification doesnt go away when I click on it
Bumping manifests a=b2g-bump