Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/7fef0d7ef8ba
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #18968 from verchaswa/Bug_999939_MADAI_CAMERA_No_effect_on_camera_option_menu_back_button

[Bug 999939][MADAI][CAMERA] No effect on camera option menu back button

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https://hg.mozilla.org/integration/gaia-central/rev/85de1ffc4916
Author: verchaswa.sharma <verchaswa.sharma@lge.com>
Desc: [Bug 999939][MADAI][CAMERA] No effect on camera option menu back button

	modified:   apps/camera/js/views/setting-options.js
	modified:   apps/camera/style/setting-options.css

	modified:   apps/camera/js/views/setting-options.js

[camera][madai][Bug999939] No effect on camera option menu back button

	modified:   apps/camera/style/setting-options.css

[Bug 999939][MADAI][CAMERA] method for localization updated

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https://hg.mozilla.org/integration/gaia-central/rev/8c9bca83b6a5
Author: Dale Harvey <dale@arandomurl.com>
Desc: Bug 1017222 - Follow up to fix marketplace test. r=me
Bumping manifests a=b2g-bump