Bumping gaia.json for 9 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/618fb3177226
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #25604 from chirarobert/homescreen_columns

Bug 1090092 - Add test for activating 4 column layout on homescreen

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https://hg.mozilla.org/integration/gaia-central/rev/49e9d9522eac
Author: Robert Chira <robertchira@P5075.(none)>
Desc: Bug 1090092 - Add test for activating 4 column layout on homescreen

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https://hg.mozilla.org/integration/gaia-central/rev/ddc1163fa4a7
Author: Evan Tseng <itoyxd@gmail.com>
Desc: Merge pull request #25597 from evanxd/bug-1090094

Bug 1090094 - Bump mozilla-download version to v0.4.4

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https://hg.mozilla.org/integration/gaia-central/rev/d25be32fafba
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 1090094 - Bump mozilla-download version to v0.4.4

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https://hg.mozilla.org/integration/gaia-central/rev/6bbe8d228406
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #25515 from TheoChevalier/ice-contacts-hardcoded

Bug 1089221 - "ICE Contacts" in contacts list is hardcoded

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https://hg.mozilla.org/integration/gaia-central/rev/78baeb0a8cf4
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 1089221 - "ICE Contacts" in contacts list is hardcoded

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https://hg.mozilla.org/integration/gaia-central/rev/e4c11b658290
Author: Martijn Wargers <mwargers@mozilla.com>
Desc: Bug 989562 - Write a test to install & launch a packaged app

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https://hg.mozilla.org/integration/gaia-central/rev/e34b613ae76f
Author: Evan Tseng <itoyxd@gmail.com>
Desc: Merge pull request #25602 from evanxd/bug-1090756

Bug 1090756 - Disable the test

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https://hg.mozilla.org/integration/gaia-central/rev/085a4dd333c7
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 1090756 - Disable the test

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "f0cd688d1cde082716ddfca1c4a58176ab818bfd", 
+    "revision": "618fb3177226f535b9e4151646e3639aa9611818", 
     "repo_path": "/integration/gaia-central"
 }