new file:   PoIInterface/PoIInterfaceTestApp/Data/overpass_bus_stops_barcelona.json
	new file:   PoIInterface/PoIInterfaceTestApp/Data/overpass_bus_stops_switzerland.json
test json files for test app, to test some import

	modified:   PoIInterface/PoIInterfaceTestApp/Main.cs
	modified:   PoIInterface/PoIInterfaceTestApp/PoIInterfaceTestApp.csproj
test app modified to include import sample for gnome trader locations