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

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https://hg.mozilla.org/integration/gaia-central/rev/fe96e6d3b904
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 1115494 - merge pull request #27007 from anefzaoui:bug-1115494 to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/9450c4c3fd9b
Author: Ahmed Nefzaoui <nefzaoui.ahmed@hotmail.com>
Desc: Bug 1115494 - [RTL] Share activity menu icons are not right-alined

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "0646d86e9a87458a382cf8c272abe7c5fb3114b4", 
+    "revision": "fe96e6d3b904a659451ba994d88b9b4cf267e52a", 
     "repo_path": "integration/gaia-central"
 }