FIX: Geocoding default configuration (see #349)

[Kryddd]

Content

This pull request solves an issue caused by the implementation of #349 that take place when the map is not present in public/config.yml. The issue : Unhandled Rejection (TypeError): conf.map is undefined in src/components/portfolioPage/GeographicMap.jsx:18

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[benel]

This pull request solves an issue caused by the implementation of #349 that take place when the map is not present in public/config.yml.

Effectivement. Bien vu.