removed gridSize from the template arguments

- not needed and code much cleaner
some minor changes
new test-cases

tests/grid/TestAll.cpp

@@ -13,13 +13,13 @@
 TEST(TestAll, Nav) {
 
 
-	Grid<20, GP> g;
+	Grid<GP> g(20);
 
 	// dijkstra mapper
 	class TMP {
-		Grid<20, GP>& grid;
+		Grid<GP>& grid;
 	public:
-		TMP(Grid<20, GP>& grid) : grid(grid) {;}
+		TMP(Grid<GP>& grid) : grid(grid) {;}
 		int getNumNeighbors(const GP& node) const {return node.getNumNeighbors();}
 		const GP* getNeighbor(const GP& node, const int idx) const {return &grid.getNeighbor(node, idx);}
 		float getWeightBetween(const GP& n1, const GP& n2) const {
@@ -29,7 +29,7 @@ TEST(TestAll, Nav) {
 		}
 	} tmp(g);
 
-	GridFactory<20, GP> gf(g);
+	GridFactory<GP> gf(g);
 
 	// load floorplan
 	FloorplanFactorySVG fpf(getDataFile("fp1.svg"), 6);