Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/949623988b8c
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #19728 from zacc/bug_1005272

Bug 1005272

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https://hg.mozilla.org/integration/gaia-central/rev/dba44056183c
Author: Zac <zcampbell@mozilla.com>
Desc: Bug 1005272 - Wait after closing the select menu, same as global select method

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https://hg.mozilla.org/integration/gaia-central/rev/286bd4d9dd67
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #19733 from KevinGrandon/bug_1013859_ftu_geolocation_state

Bug 1013859 - [v2.0] Geolocation disabled by default in FTU app

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https://hg.mozilla.org/integration/gaia-central/rev/15d723a0ef0e
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1013859 - [v2.0] Geolocation disabled by default in FTU app r=arcturus
Bumping manifests a=b2g-bump