Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_4/rev/f0a9a6d52941
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #18162 from mikehenrty/bug-987458-1.4rebase

Merge pull request #18048 from mikehenrty/bug-987458-queuemozapps

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https://hg.mozilla.org/integration/gaia-1_4/rev/f444980b8d10
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #18048 from mikehenrty/bug-987458-queuemozapps

Bug 987458 - [B2G][Calendar] Only one alarm will fire and only one notif...
Conflicts:
	apps/calendar/js/notification.js
	apps/calendar/test/marionette/alarm_test.js

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https://hg.mozilla.org/integration/gaia-1_4/rev/489d69aca17d
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #17997 from mikehenrty/bug-988737-clear

Bug 988737 - SMS notifications do not clear when launching SMS app after... r=alive
Bumping manifests a=b2g-bump