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

========

https://hg.mozilla.org/integration/gaia-central/rev/aa1ebd9c0116
Author: evanxd <itoyxd@gmail.com>
Desc: Merge pull request #13028 from evanxd/bug-925961

Bug 925961 - [B2G][Email] Receiver's email address displays as "null" after saving, editing, and then saving the draft again

========

https://hg.mozilla.org/integration/gaia-central/rev/22c91d39b070
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 925961 - Use the email address parser for showing bubble properly.

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "2cf15a32048656b8b71c56ed5c5468c9644caf17", 
+    "revision": "aa1ebd9c011628a4e1a9802fd552ec853610b2f5", 
     "repo_path": "/integration/gaia-central"
 }