LMS-740 Add default constructor (needed by beanlib)

SVN: 9796

openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/dto/Session.java

@@ -35,6 +35,10 @@ public final class Session extends BasicSession implements IAuthSession
      * is not defined.
      */
     private PersonPE personOrNull;
+    
+    public Session()
+    {
+    }
 
     public Session(final String user, final String sessionToken, final Principal principal,
             final String remoteHost, final long sessionStart)