MFbed: Update the German website.

www/de/index.xsl 1.159 -> 1.160
www/de/platforms/amd64.sgml 1.16 -> 1.17
www/de/share/sgml/news.xml 1.56 -> 1.59
www/de/share/sgml/press.xml 1.30 -> 1.31
www/de/support/bugreports.sgml 1.3 -> 1.4

Obtained from: The FreeBSD German Documentation Project.