Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/fa7dd2390fbc
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #10698 from comoyo/VCF-878579

Bug 878579 - [contacts] Import from "memory card", not "sd card"; use same term like media apps [r=aryx]

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https://hg.mozilla.org/integration/gaia-central/rev/cdbb3e55550f
Author: Sergi Mansilla <sergi.mansilla@gmail.com>
Desc: Bug 878579 - [contacts] Import from "memory card", not "sd card"; use same term like media apps [r=aryx]