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

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https://hg.mozilla.org/integration/gaia-central/rev/7e70d8cbb8b0
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Merge pull request #22925 from pivanov/bug-1053418

Bug 1053418 - typos in shared/style/icons/icons.html and shared/style/icons/selection.json

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https://hg.mozilla.org/integration/gaia-central/rev/cb72f27db413
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 1053418 - typos in shared/style/icons/icons.html and shared/style/icons/selection.json r=pivanov

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "18c3b948728e9ae13da0128e4e0db1918f3564c4", 
+    "revision": "7e70d8cbb8b0016c6007e45f6b37491136ffcd30", 
     "repo_path": "/integration/gaia-central"
 }