worked on 3d models within map

adjusted grid factory
adjusted nav mesh factory
minoor changes/fixes
new helper classes
refactoring

grid/walk/v2/modules/WalkModuleFollowDestination.h

@@ -42,6 +42,10 @@ public:
 
 	}
 
+	const Dijkstra<Node>& getDijkstra() const {
+		return dijkstra;
+	}
+
 	/** ctor WITH known destination*/
 	WalkModuleFollowDestination(const Grid<Node>& grid, const Node& destination) : grid(grid) {
 		setDestination(destination);