added JSNI-based collator

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

@@ -0,0 +1,13 @@
+package com.sap.sailing.gwt.ui.client;
+
+public class Collator {
+    private static final Collator instance = new Collator();
+    
+    public static final Collator getInstance() {
+        return instance;
+    }
+    
+    public native int compare(String o1, String o2); /*-{
+        return o1.localeCompare(o2);
+    }-*/
+}

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

@@ -1,6 +1,5 @@
 package com.sap.sailing.gwt.ui.client;
 
-import java.text.Collator;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;