Changed the EditNodeCategories dialog to take a nodeRef rather than an id

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@6877 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/bean/repository/Node.java

@@ -282,6 +282,14 @@ public class Node implements Serializable
       return this.nodeRef;
    }
    
+   /**
+    * @return Returns the string form of the NodeRef this Node represents
+    */
+   public final String getNodeRefAsString()
+   {
+      return this.nodeRef.toString();
+   }
+   
    /**
     * @return Returns the type.
     */