add leaderboard specific stylesheet

java/com.sap.sailing.gwt.ui/src/main/resources/com/sap/sailing/gwt/ui/LeaderboardEditing.gwt.xml

@@ -13,7 +13,7 @@
   <!-- <inherits name='com.google.gwt.user.theme.standard.Standard'/> -->
   <!-- <inherits name='com.google.gwt.user.theme.chrome.Chrome'/> -->
   <!-- <inherits name='com.google.gwt.user.theme.dark.Dark'/>     -->
-
+  <stylesheet src="../Leaderboard.css" />
   <!-- Google Maps API -->
   <inherits name='com.google.gwt.maps.GoogleMaps' />
   
@@ -29,4 +29,4 @@
   <extend-property name="locale" values="de"/>
   <source path='client'/>
   <source path='shared'/>
-</module>
+</module>