made name of leaderboard management tab in admin console more consistent to the other names

java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/ui/adminconsole/AdminConsoleEntryPoint.java

@@ -92,7 +92,7 @@ public class AdminConsoleEntryPoint extends AbstractSailingEntryPoint implements
             public void refreshAfterBecomingVisible() {
                 fillLeaderboards();
             }
-        }, getStringMessages().leaderboardConfiguration(), Permission.MANAGE_LEADERBOARDS);
+        }, getStringMessages().leaderboards(), Permission.MANAGE_LEADERBOARDS);
         regattasDisplayers.add(leaderboardConfigPanel);
         leaderboardsDisplayers.add(leaderboardConfigPanel);