removed gridSize from the template arguments

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

tests/grid/GridImportance.cpp

@@ -11,8 +11,8 @@ TEST(GridImportance, a) {
 
 
 
-	Grid<20, GP> g;
-	GridFactory<20, GP> gf(g);
+	Grid<GP> g(20);
+	GridFactory<GP> gf(g);
 	FloorplanFactorySVG fpf(getDataFile("fp1.svg"), 6);
 
 	Floor f1 = fpf.getFloor("1");