Filtre par zone géographique

Imported issue: This issue was initially reported by @dvojtise in https://gforge.inria.fr/tracker/?func=detail&aid=16583 (Additionnal comments haven't been imported and may still be there)

Avoir comme pour les espéces un filtre limitant l'affichage aux espéces d'une zone géographique

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information