Warning for Password - to use US-UTF8 Characters

It took me some time to figure out why I cannot log into the admin panel after the setup and trying starting all over multiple times.

Until I started to read the setup scripts and noticed that probably the strict encoding to US-UTF8 for python to consume does not inlcude the characters like ä and ß etc^^.

I have tried using different passwords, but somehow always hit one of those characters.

I think a warning at some place might be enough.

Cheers!