Merge of all UI clustering changes originally applied to 2.2

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@8292 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/service/namespace/DynamicNamespacePrefixResolver.java

@@ -41,6 +41,8 @@ import java.util.Set;
 public class DynamicNamespacePrefixResolver implements NamespaceService
 {
 
+    private static final long serialVersionUID = -7721089444629137409L;
+
     /**
      * The delegate
      */