Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/7ede04be6dcb
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #20909 from anefzaoui/bug-1029175

Bug 1029175 - [Homescreen] Notification tray needs visual attention

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https://hg.mozilla.org/integration/gaia-central/rev/6c8774ddb9b4
Author: Ahmed Nefzaoui <nefzaoui.ahmed@hotmail.com>
Desc: Bug 1029175 - [Homescreen] Notification tray needs visual attention

========

https://hg.mozilla.org/integration/gaia-central/rev/06f9935af929
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #21423 from TheoChevalier/bug-1028808-inconsistency-homescreen

Bug 1028808 - Inconsistent spelling of "Homescreen" across Gaia apps

========

https://hg.mozilla.org/integration/gaia-central/rev/3f1b9502e193
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 1028808 - Inconsistent spelling of "Homescreen" across Gaia apps

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "d6f76aece6529a832205cb638f9e46947ef62b32", 
+    "revision": "7ede04be6dcbbf33bf2bbc4f8a02ce17bcecd06a", 
     "repo_path": "/integration/gaia-central"
 }