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

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https://hg.mozilla.org/integration/gaia-central/rev/3dc9f97f0061
Author: Sherman Chen <shamenchens@users.noreply.github.com>
Desc: Merge pull request #18835 from shamenchens/Bug1003771-Homescreen

Bug 1003771 Move distribution_tablet/homescreens.json to apps/homescreen/build/tablet/, r=yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/8596654dcb7f
Author: Sherman Chen <shamen.chens@gmail.com>
Desc: Bug 1003771 Move distribution_tablet/homescreens.json to apps/homescreen/build/tablet/

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "01c20b272cd59d6d8f18e552141f4aa54a2cf11e", 
+    "revision": "3dc9f97f0061b360cc9d718190d81129e8c1ff49", 
     "repo_path": "/integration/gaia-central"
 }