Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-1_4/rev/9310167400c5
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #20426 from alivedise/bugzilla/1023812_v1.4/open-bottom-most-window-in-activitydone

Bugzilla/1023812 v1.4/open bottom most window in activitydone, r=timdream

========

https://hg.mozilla.org/integration/gaia-1_4/rev/036377f635da
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1023812 - open bottom most window in activitydone
Bumping manifests a=b2g-bump