#231 edit canonical map in german lang. fails

[Anonymous]

If you set the language in webin to german you can create a "adress mapping lookup tables"
[Adressenverknüpfungstabellen] with the value "hash:/etc/postfix/canonical" only if the file exists.
After you have "touched" the file and want to "Edit canonical maps" [Kanonische Verknüpfungen
bearbeiten] you will receive an error [Interner Fehler].

If you switch to the english version, everything works fine.