utf-8 encoding of ispconfig web pages

[Kornik]

Hi!

I have just noticed that ISPConfig uses different charactersets on it's admin web pages:
admin/index.php: windows-1252
admin/legende.php: windows-1252
admin/placeholder.php: windows-1252
admin/falsch.htm: windows-1252
admin/datenbank/repair.php: iso-8859-1
admin/datenbank/optimize.php: iso-8859-1
admin/datenbank/check.php: iso-8859-1
admin/navigation.php: windows-1252
admin/logout_fehler.htm: windows-1252
admin/nojsindx.htm: windows-1252
And so on...

Wouldn't be nice to change it to the utf-8? It would also solve the problem with language specific chars (like Polish łóżńć).

I'm going to change it in my copy, but I don't like the idea of changing it every upgrade.