description for session/log id define, better error check for no pk id

PK ID return check if not set is checked correctly in normal execute
The SET_SESSION_NAME and LOG_FILE_ID get commented out in settings as
they should be rather set per file or in header

www/lib/CoreLibs/DB/IO.inc

@@ -1497,7 +1497,7 @@ class IO extends \CoreLibs\Basic
 						} elseif ($this->insert_id[0][$this->prepare_cursor[$stm_name]['pk_name']]) {
 							$this->insert_id = $this->insert_id[0][$this->prepare_cursor[$stm_name]['pk_name']];
 						}
-					} else {
+					} elseif (count($this->insert_id) == 0) {
 						// failed to get insert id
 						$this->insert_id = '';
 						$this->warning_id = 33;