Rename printjob to print

This is the viewmodel for the print page, and as it can handle multiple
print jobs (and in keeping with this project's conventions), it should
be named 'print'.
Make sure the service looks nice even with JS disabled

Of course, it's going to be absolutely inoperable without JS,
but the least we could do is make it clear what's going on.

The display text is kept in German, as that will be the eventual
display language
Wow. Solch Deutsch. Sehr Wörter. Unglaublich

Jokes aside, this changes all display text to be in german.