don't forget to switch off offline repo when installation is cancelled;
make sure offline repo is used by default if available;
use halifax server as backup if packages are not in offline repo

nur bei Worten der Form /[A-Z][a-z]\+er\>/, also evtl. unvollständig

Internet access for linuxparty.sh in chroot;
Add halifax server to packages sources at beginning of linuxparty.sh;
Spelling corrections in some scripts

Removed the following line, add later when it works again:
ubiquity ubiquity/partman-skip-unmount boolean true