MFde: Update the German website

www/de/administration.sgml 1.41 -> 1.43
www/de/FAQ/index.html 1.1 -> 1.3
www/de/handbook/index.html 1.1 -> 1.3
www/de/share/sgml/news.xml 1.373 -> 1.377

Obtained from: The FreeBSD German Documentation Project