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

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https://hg.mozilla.org/integration/gaia-central/rev/c5a1597d0eb7
Author: Fernando Jiménez Moreno <ferjmoreno@gmail.com>
Desc: Merge pull request #29346 from ferjm/bug1118437

Bug 1118437 - [RTL][Settings] FxA login screens are left-aligned. r=aliv...

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https://hg.mozilla.org/integration/gaia-central/rev/6ca04e8bdaf7
Author: Ahmed Nefzaoui <nefzaoui.ahmed@hotmail.com>
Desc: Bug 1118437 - [RTL][Settings] FxA login screens are left-aligned. r=alive,jgruen

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https://hg.mozilla.org/integration/gaia-central/rev/291328a1e223
Author: autolander <bug.autolander@gmail.com>
Desc: Bug 976850 - merge pull request #29345 from mcav:refactor-gelam to mozilla-b2g:master

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https://hg.mozilla.org/integration/gaia-central/rev/c9697aed45a5
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Bug 976850 - [email/backend] Refactor GELAM tests. r=asuth

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "ef61ebbe5de8c2c9fc2a8f74a12455044c3b82e9", 
+        "git_revision": "5f85b2592fb75aebc3d3fefeec38000143919bb2", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "fceb69a8216d41525d5bec7efe4e97c140cc386d", 
+    "revision": "c5a1597d0eb79878129cfec7569c0cb12e16caad", 
     "repo_path": "integration/gaia-central"
 }