Bumping gaia.json for 1 gaia-1_3 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/734841783185
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 932793 - Intermittent test "thread_ui.js > scrolling scroll 100px, should be detected as a manual scroll" r=schung a=tests

* Fix intermittent scripts by sending the scroll event in the test
* Fix bad tests that were revealed in the process: `done` callback set on the
  suite function instead of the test function, wrong SMS messages.
* Linearized and de-asynchronized some tests

(cherry picked from commit 942cba7260b3855364ece50bb0f6b9514ed84333)