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/bb08d1963dfa
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #15820 from davidflanagan/bug944276

Merge pull request #14547 from davidflanagan/bug946519-v1.2 r=julienw

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https://hg.mozilla.org/integration/gaia-1_3/rev/a0276047aa7a
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #14547 from davidflanagan/bug946519-v1.2

Bug 944276: MMS workaround for problem with memory-backed blobs r=julienw(cherry picked from commit bd559ee748be267a80fff2bbdbd887c85af06eba)

add global comment to keep jshint happy