public function __construct($createTables = false)
 {
     $this->createTables = $createTables;
     // use another table prefix?
     if (file_exists(WB_PATH . '/modules/' . basename(dirname(__FILE__)) . '/config.json')) {
         $config = json_decode(file_get_contents(WB_PATH . '/modules/' . basename(dirname(__FILE__)) . '/config.json'), true);
         if (isset($config['table_prefix'])) {
             self::$table_prefix = $config['table_prefix'];
         }
     }
     parent::__construct();
     $this->setTablePrefix(self::$table_prefix);
     $this->setTableName('mod_kit_config');
     $this->addFieldDefinition(self::field_id, "INT(11) NOT NULL AUTO_INCREMENT", true);
     $this->addFieldDefinition(self::field_name, "VARCHAR(32) NOT NULL DEFAULT ''");
     $this->addFieldDefinition(self::field_type, "TINYINT UNSIGNED NOT NULL DEFAULT '" . self::type_undefined . "'");
     $this->addFieldDefinition(self::field_value, "VARCHAR(255) NOT NULL DEFAULT ''", false, false, true);
     $this->addFieldDefinition(self::field_label, "VARCHAR(64) NOT NULL DEFAULT 'ed_str_undefined'");
     $this->addFieldDefinition(self::field_description, "VARCHAR(255) NOT NULL DEFAULT 'ed_str_undefined'");
     $this->addFieldDefinition(self::field_status, "TINYINT UNSIGNED NOT NULL DEFAULT '" . self::status_active . "'");
     $this->addFieldDefinition(self::field_update_by, "VARCHAR(32) NOT NULL DEFAULT 'SYSTEM'");
     $this->addFieldDefinition(self::field_update_when, "DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00'");
     $this->setIndexFields(array(self::field_name));
     $this->setAllowedHTMLtags('<a><abbr><acronym><span>');
     $this->checkFieldDefinitions();
     date_default_timezone_set(CFG_TIME_ZONE);
     // Tabelle erstellen
     if ($this->createTables) {
         if (!$this->sqlTableExists()) {
             if (!$this->sqlCreateTable()) {
                 $this->setError(sprintf('[%s - %s] %s', __METHOD__, __LINE__, $this->getError()));
             }
         }
     }
     if (!defined('KIT_INSTALL_RUNNING')) {
         // Default Werte garantieren
         if ($this->sqlTableExists()) {
             $this->checkConfig();
         }
     }
 }