Fix draw score

tippspiel/app/Tipp.php

@@ -38,11 +38,12 @@ class Tipp extends Model
     ];
 
     public static function winTeam($resulta, $resultb) {
+            if ($resulta == $resultb) {
+                return 'draw';
+            }
             if ($resulta > $resultb) {
                 return 'a';
             } else {
-                //if scores are even, b will be returned
-                //if match and tipp score is even, they'll both will be b
                 return 'b';
             }
     }