Add a couple requested (and properly registered) mime types.

See:
http://www.iana.org/assignments/media-types/application/
http://www.rfc-editor.org/rfc/rfc3236.txt
http://www.iana.org/assignments/media-types/image/vnd.djvu

PR: 7795,7969


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@94645 13f79535-47bb-0310-9956-ffa450edef68