import java.util.logging.Level;
import java.util.logging.Logger;
-import javax.annotation.Resource;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceException;
import javax.persistence.TransactionRequiredException;
-import javax.transaction.Status;
-import javax.transaction.SystemException;
-import javax.transaction.UserTransaction;
import org.apache.wicket.markup.html.WebPage;