Opraveny chyby v agendě Střediska/komise.

refs #97

src/main/java/info/bukova/isspst/dao/jpa/BaseDaoJPA.java

@@ -40,7 +40,12 @@ public abstract class BaseDaoJPA<T> implements BaseDao<T> {
 
 	@Override
 	public void delete(T entity) {
-		sessionFactory.getCurrentSession().delete(entity);
+		try {
+			sessionFactory.getCurrentSession().delete(entity);
+		} catch (NonUniqueObjectException e) {
+			Object o = sessionFactory.getCurrentSession().merge(entity);
+			sessionFactory.getCurrentSession().delete(o);
+		}
 	}
 
 	@Override

src/main/java/info/bukova/isspst/ui/workgroups/WorkgroupForm.java

@@ -124,7 +124,7 @@ public class WorkgroupForm extends FormViewModel<Workgroup> {
 			return;
 		}
 		
-		getDataBean().removeMember(u);
+		workgroupService.removeMember(getDataBean(), u);
 		
 		if (!target.equals("users")) {
 			moveUser(u.getMember(), event);