when an error occured and clicking the back button to return to previous page the referer-var in session is deleted -> server error
Das Datefeld wird bei Aenderungen einer Sprache (update, install, deinstall) nicht richtig gesetzt!!! Die Formatfunktionen gehoeren nicht in class.Language. Die sind auch woanders einsetzbar!!! Daher->besser in class.Format
The DATE field is not set correctly on changes of a language (update, install, your stable). The format functions do not belong in class.Language. Those are also applicable elsewhere. Therefore, they would be better placed in class.Format