Bumping gaia.json for 6 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/1f2b72c42039
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Merge pull request #17136 from asutherland/camera-use-file

Bug 949941 - [Camera] Replace all memory-backed Blob instances with disk-backed File instances after saving to disk so "pick" activity consumers don't break. r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/3db440e00318
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Bug 949941 - [Camera] Replace all memory-backed Blob instances with disk-backed File instances after saving to disk so "pick" activity consumers don't break. r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/3a7555a04378
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #17033 from crdlc/bug-981657

Bug 981657 - [Download Manager] Some UI components are visible while the...

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https://hg.mozilla.org/integration/gaia-central/rev/7d1049f544bc
Author: crdlc <crdlc@tid.es>
Desc: Bug 981657 - [Download Manager] Some UI components are visible while the list is loading and several downloads are working

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https://hg.mozilla.org/integration/gaia-central/rev/e960ccd01fe6
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #17123 from arcturus/bug-982082

Bug 982082 - [Contacts] JSHint fixes for js/export/

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https://hg.mozilla.org/integration/gaia-central/rev/9a1d08731cb4
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Bug 982082 - [Contacts] JSHint fixes for js/export/
Bumping manifests a=b2g-bump