MFbed: Update the German website.

www/de/includes.navabout.sgml 1.3 -> 1.4
www/de/includes.navdownload.sgml fixes only
www/de/includes.sgml fixes only
www/de/includes.xsl fixes only
www/de/index.xsl 1.143 -> 1.146
www/de/community/webresources.sgml Headerupdate
www/de/news/news.xml 1.389 -> 1.396
www/de/platforms/pc98.sgml 1.14 -> 1.15
www/de/releases/index.sgml 1.108 -> 1.109
www/de/support/webresources.sgml 1.1 -> 1.2

Obtained from: The FreeBSD German Documentation Project.