Bumping gaia.json for 6 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/aa934b827342
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Merge pull request #22501 from pivanov/bug-1037606

Bug 1037606 - The placeholder text shown when the list of contacts is empty is left aligned in RTL mode

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https://hg.mozilla.org/integration/gaia-central/rev/90b0ffacd479
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 1037606 - The placeholder text shown when the list of contacts is empty is left aligned in RTL mode

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https://hg.mozilla.org/integration/gaia-central/rev/893149213746
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Merge pull request #22502 from pivanov/bug-1037607

Bug 1037607 - The drop-down fields in the add contact dialog are left aligned

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https://hg.mozilla.org/integration/gaia-central/rev/46944f3c88fb
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 1037607 - The drop-down fields in the add contact dialog are left aligned

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https://hg.mozilla.org/integration/gaia-central/rev/17f156ed4f0a
Author: vingtetun <21@vingtetun.org>
Desc: Merge pull request #22586 from vingtetun/system.dialog.size2

Bug 1047411 - Firefox Accounts UI misplaced. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/8938b405f3ba
Author: Vivien Nicolas <vnicolas@mozilla.com>
Desc: Bug 1047411 - Firefox Accounts UI misplaced. r=alive

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "6affb05ae3283942609e9411b2d1d659bd67a8a4", 
+    "revision": "aa934b82734277331ead4666fa115b6cfedbdaae", 
     "repo_path": "/integration/gaia-central"
 }