Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/3cd8d6565396
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #18083 from fcampo/split-fte-comms-REST-990976

Bug 990976 - Move rest of dependant files to shared

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https://hg.mozilla.org/integration/gaia-central/rev/54157e9dd44e
Author: Fernando Campo <fernando.campo@telefonica.com>
Desc: Bug 990976 - Move rest of dependant files to shared

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- Change importUtils into utils.misc
- Erase import_utils.js dependencies
- Moved css files
- Moved locales locales
Bumping manifests a=b2g-bump