Land of Sands - 4th update

Changelog:

-Natural Valley area expanded, and added improvements and new additions.
-94 KM long asphalt road that goes from Nuova Ostia to Farlands. Officially the longest asphalt road on the map.
-Abandonned buildings near the 94 KM long road.
-Reduced amount of street lights in some towns.
-Street expansion in Farlands.
-Updated thumbnail for Farlands.
-Added new paths