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

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https://hg.mozilla.org/integration/gaia-central/rev/cc6399da2939
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #20208 from alivedise/bugzilla/1021811/sheet-settings

Bug 1021811 - Add naviagtions panel in settings, r=arthur

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https://hg.mozilla.org/integration/gaia-central/rev/dcdcf5b4ad5b
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1021811 - Add naviagtions panel in settings

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https://hg.mozilla.org/integration/gaia-central/rev/0e35b56a4cad
Author: Staś Małolepszy <stas@mozilla.com>
Desc: Merge pull request #20200 from stasm/1000895-system-once-bustage-fix

Bug 1000895 - Clean up bootstrap mozL10n API use in System (re-landed). r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/47afbaa91861
Author: Staś Małolepszy <stas@mozilla.com>
Desc: Bug 1000895 - Clean up bootstrap mozL10n API use in System (re-landed). r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/1f1d3c3c56f3
Author: Zac <zcampbell@mozilla.com>
Desc: Bug 1022204 - Address intermittent in test_clock_create_new_alarm.py a=testonly
Bumping manifests a=b2g-bump