Support owner with no related person in listboxs

bt5/erp5_base/CatalogMethodTemplateItem/portal_catalog/erp5_mysql_innodb/SQLCatalog_makeOwnerTitleSearchQuery.xml

@@ -60,7 +60,7 @@ reference_list = [x.reference for x in\n
                                         select_list=[\'reference\'],\n
                                         portal_type="Person", title=value)]\n
 \n
-return SimpleQuery(owner=reference_list or -1)\n
+return SimpleQuery(owner=reference_list or value or -1)\n
 </string> </value>
         </item>
         <item>

bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Base_getOwnerTitle.xml

@@ -58,6 +58,7 @@ if owner_id_list:\n
   found_user_list = getUserByLogin(context.getPortalObject(), tuple(owner_id_list))\n
   if found_user_list:\n
     return found_user_list[0].getTitle()\n
+  return owner_id_list[0]\n
 </string> </value>
         </item>
         <item>