/**
  * Returns the SilverCart version.
  *
  * @return string
  *
  * @author Sebastian Diel <*****@*****.**>
  * @since 24.10.2011
  */
 public static function SilvercartVersion()
 {
     if (is_null(self::$silvercartVersion)) {
         $defaults = Config::inst()->get('SilvercartSiteConfig', 'defaults');
         self::$silvercartVersion = $defaults['SilvercartVersion'];
     }
     return self::$silvercartVersion;
 }