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

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https://hg.mozilla.org/integration/gaia-1_3/rev/235ecc881065
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #17199 from AndreiH/fix_other_video_tests

Bug 983111 - [v1.3] test_play_3gp_video.TestPlay3GPVideo intermittently ...

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https://hg.mozilla.org/integration/gaia-1_3/rev/beb47a346009
Author: Andrei Hutusoru <andreihutusoru@P5069.(none)>
Desc: Bug 983111 - [v1.3] test_play_3gp_video.TestPlay3GPVideo intermittently fail
Bumping manifests a=b2g-bump
Bumping manifests a=b2g-bump
Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/85de9f557cbc
Author: Gabriele Svelto <gsvelto@mozilla.com>
Desc: Bug 981521 - Display notifications for messages with a "signal-none" action r=julienw
Bumping manifests a=b2g-bump
Merge b2g28 to v1.3t. a=merge