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

========

https://hg.mozilla.org/integration/gaia-central/rev/610dda30df47
Author: AxelR <aroyerb@gmail.com>
Desc: Bug 981572 - No forward buttons on undownloaded MMS r=julien

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "036e72a2314bf6007a577040611ba761d88d4172", 
+    "revision": "610dda30df471e56ed8e65e8a5aca2329b6852b8", 
     "repo_path": "/integration/gaia-central"
 }