Bumping gaia.json for 5 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/c22773b780be
Author: Dave Hunt <dave.hunt@gmail.com>
Desc: Bug 1061515 - Bump marionette_client dependency to 0.8.4. r=zcampbell

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https://hg.mozilla.org/integration/gaia-central/rev/5548b3ad381f
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Merge pull request #23681 from Cwiiis/bug1062321-notifications-not-scrollable

Bug 1062321 - Fix notification overflow not being scrollable. r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/eec1007d49b5
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Bug 1062321 - Fix notification overflow not being scrollable. r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/889a4f5b3b80
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #23589 from comoyo/bug1048228-v2

Bug 1048228 - Set the last used keyboard as default after restart of the phone. r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/60b9dbd5e269
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Bug 1048228 - Set the last used keyboard as default after restart of the phone
Bumping manifests a=b2g-bump