Missing "RoW" geocollection

[nrogy]

There is an empty RoW geocollection in the create_restofworlds_collections() method of base_data.py script.

I propose the following change :

geocollections["RoW"] = {
        "filepath" : os.path.join(""), #NR: you have to enter the adress of the RoW map (row.gpkg)
        "field" : "name_RoW",
        "kind" : "vector"
        }

@cmutel for all the issues I underlined, you can find the explanations in a tutorial based on one of your work.