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

========

https://hg.mozilla.org/integration/gaia-central/rev/670b42b547f8
Author: Francisco Jordano <fjordano@mozilla.com>
Desc: Bug 1042730 - Use better icons when bookmarking and searching places r=daleharvey

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "758bbdda6bb74338d12d2b919f26029432c04037", 
+    "revision": "670b42b547f817727fc98f2983c606e8cc8766af", 
     "repo_path": "/integration/gaia-central"
 }