Spreadsheet maximum/minimum size rows: 1-99 columns: 1-26 limit implemented.

Axel/src/de/hs_mannheim/informatik/spreadsheet/Spreadsheet.java

@@ -26,7 +26,14 @@ public class Spreadsheet {
 	 */
 	public Spreadsheet(int rows, int cols) {
 
-		// TODO limit the maximum size on 99 (1..99) rows and 26 (A..Z) columns
+		if(rows>99)
+			rows = 99;
+		else if(rows<1)
+			rows = 1;
+		if(cols < 1)
+			cols = 1;
+		else if(cols > 26)
+			cols = 26;
 
 		cells = new Cell[rows][cols];