fixed some selection issues; leaderboards are properly displayed

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/client/LeaderboardConfigPanel.java

@@ -563,6 +563,7 @@ public class LeaderboardConfigPanel extends FormPanel implements EventDisplayer,
                 leaderboardNames.add(leaderboardName);
                 leaderboardsListBox.addItem(leaderboardName);
                 leaderboardsListBox.setSelectedIndex(leaderboardsListBox.getItemCount()-1);
+                leaderboardSelectionChanged();
             }
         });
     }