- keep German version in sync

  (except for upgrading.xml.de)
- added hints on which revision the versions are based on
- rearranged a heading in sitemap, because it broke the navigation sidebar
  (was too long, needs german review, I guess)
- picked some nits


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@97754 13f79535-47bb-0310-9956-ffa450edef68