Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/2bb241995468
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Merge pull request #16621 from millermedeiros/972666-lines-over-events

Bug 972666 - [Calendar] lines over events longer than 2 hours r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/fab6c91479fd
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 972666 - [Calendar] lines over events longer than 2 hours

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https://hg.mozilla.org/integration/gaia-central/rev/cf294dfce912
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Revert "Bug 942854 - [Calendar] Scrolling the week view results into results into overlapping artifacts. r=kgrandon"

This reverts commit 78dc0c0013d25de52175e750e4be46bfb2727ef3.

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "branch": "", 
         "revision": ""
     }, 
-    "revision": "fe8ce877d493ebcd883d45b48a4295545e60519e", 
+    "revision": "2bb2419954687c04ec8f992ae255da8fd4ab0eb8", 
     "repo_path": "/integration/gaia-central"
 }