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

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https://hg.mozilla.org/integration/gaia-central/rev/7e08ad6db05e
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #14774 from jmcanterafonseca/export_active_3

Bug 951131 - In the export view when clicking on a contact, the item rem...

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https://hg.mozilla.org/integration/gaia-central/rev/16c49dde92f0
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 951131 - In the export view when clicking on a contact, the item remains in the active state

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https://hg.mozilla.org/integration/gaia-central/rev/0a929d5c8b73
Author: Hubert Figuière <hub@figuiere.net>
Desc: Merge pull request #14772 from hfiguiere/bug949209-2

Bug 949209 - make the src available if gaia is a bit older as well. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/65b508b284ff
Author: Hubert Figuière <hub@figuiere.net>
Desc: Bug 949209 - make the src available if gaia is a bit older as well.