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

========

https://hg.mozilla.org/integration/gaia-1_3/rev/114c36d7b018
Author: Gabriele Svelto <gsvelto@mozilla.com>
Desc: Bug 976503 - Properly handle incoming messages with a 'si-id' field r=julienw

(cherry picked from commit 065154bf60176b0a17c34c4db4bcc384d2d894a5)

Conflicts:
	apps/wappush/js/wappush.js
Bumping manifests a=b2g-bump