add serialVersionUID

Author: skyhit

components/resource_management/src/java/main/com/topcoder/management/resource/Notification.java

@@ -24,6 +24,11 @@
  */
 public class Notification extends AuditableResourceStructure {
 
+    /**
+     * Default serial version id.
+     */
+    private static final long serialVersionUID = 1L;
+
     /**
      * <p>
      * The identifier of the project that the notification applies to.

components/resource_management/src/java/main/com/topcoder/management/resource/NotificationType.java

@@ -22,6 +22,11 @@
  */
 public class NotificationType extends AuditableResourceStructure {
 
+    /**
+     * Default serial version id.
+     */
+    private static final long serialVersionUID = 1L;
+
 
     /**
      * <p>

components/resource_management/src/java/main/com/topcoder/management/resource/ResourceRole.java

@@ -43,6 +43,11 @@
  */
 public class ResourceRole extends AuditableResourceStructure {
 
+    /**
+     * Default serial version id.
+     */
+    private static final long serialVersionUID = 1L;
+
     /**
      * <p>
      * The value that the id field will have (and that the getId