Bumping gaia.json for 2 gaia-1_3 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/a2dfc22b6ae4
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #15873 from davidflanagan/bug956811-v1.3

Merge pull request #15815 from davidflanagan/bug956811

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https://hg.mozilla.org/integration/gaia-1_3/rev/9f7e0830454f
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #15815 from davidflanagan/bug956811

Bug 956811: ugly workaround that abuses the settings db for interapp communication r=jporter(cherry picked from commit 2c64a463f6bb053a05326ee1b6c5236eb31b898c)