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

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https://hg.mozilla.org/integration/gaia-central/rev/4a7671463029
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #18523 from crdlc/bug-998905

Bug 998905 - After importing contacts photos are not shown in the contac...

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https://hg.mozilla.org/integration/gaia-central/rev/2bcba9129fe4
Author: crdlc <crdlc@tid.es>
Desc: Bug 998905 - After importing contacts photos are not shown in the contacts list

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https://hg.mozilla.org/integration/gaia-central/rev/ac35e0a4d741
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #18525 from hfiguiere/bug987383-2

Bug 987383 - Disable the screenshot on timeout introduced by bug 962918 r=kgrandon

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https://hg.mozilla.org/integration/gaia-central/rev/fe3e07586455
Author: Hubert Figuière <hub@figuiere.net>
Desc: Bug 987383 - Disable the screenshot on timeout introduced by bug 962918. r=kgrandon

Based on Kevin Grandon initial patch.

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https://hg.mozilla.org/integration/gaia-central/rev/57c2bad43bed
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #18531 from KevinGrandon/bug_962918_update_node_modules

Bug 962918 - Update gaia-node-modules to v1.1.7

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https://hg.mozilla.org/integration/gaia-central/rev/7bc70b10ccbf
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 962918 - Update gaia-node-modules to v1.1.7

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "b209dbf62facaae103d9a577ef885d429a431d6c", 
+    "revision": "4a76714630299428904619cc6302f7ab3d099929", 
     "repo_path": "/integration/gaia-central"
 }