Bumping gaia.json for 5 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/b8b4b61fc4c8
Author: Dave Huseby <dhuseby@mozilla.com>
Desc: Merge pull request #11799 from dhuseby/email/Bug910068_manual_config_of_email_uses_autocorrect_in_hostname_input_box

Bug 910068 - manual config of email uses autocorrect in hostname input box

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https://hg.mozilla.org/integration/gaia-central/rev/44a40eb0bd2e
Author: Dave Huseby <dhuseby@mozilla.com>
Desc: Bug 910068 - manual config of email uses autocorrect in hostname input box

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https://hg.mozilla.org/integration/gaia-central/rev/df2a90be84da
Author: Dave Huseby <dhuseby@mozilla.com>
Desc: Bug 910068 - manual config of email uses autocorrect in hostname input box

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https://hg.mozilla.org/integration/gaia-central/rev/84cf573f455c
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #11984 from crdlc/bug-913222

Bug 913222 - Removing or deplacing apps doesn't work anymore

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https://hg.mozilla.org/integration/gaia-central/rev/c17d0d7b0756
Author: crdlc <crdlc@tid.es>
Desc: Bug 913222 - Removing or deplacing apps does not work anymore

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "627f494cb7b6eb49057434711d1070341430b367", 
+    "revision": "b8b4b61fc4c874a72cf670cd58be33634a231283", 
     "repo_path": "/integration/gaia-central"
 }