After some time, i managed to get GNOME Photo Printer back online again. The links to the packages remained but the website link has changed. You can find the newest versions at the right menu-bar under projects and GNOME Photo Printer.

Also, i removed the german description of how to use gimp for making panoramo pictures. The description was outdated and there exist some good programs (hugin and Panorama Tools) which will assist the user by creating panorama views.