Tidy up some loose ends that no longer work after the apache-1.x server on

hub.freebsd.org and the supporting 15 year old binaries have gone away.

Highlights:
- Sync up the cgi scripts to be closer to the standard page look
and feel and the canonical url locations.
- Adjust the search controls to include the docs.freebsd.org doc set.
- Replace the remaining wais search references.
- Fix up the embedded paths that depended on a symlink and/or nfs jungle
on hub. These aren't present in the jail this now runs in.
- Fix a typo (stray backtick) in one of the header entities.
- Remove the remaining no-longer-functional gnats components - they
ran on hub and no longer exist.

Build tested by: gjb
Brought to you by:  lots of coffee, profanity and confusion.

en_US.ISO8859-1/htdocs/cgi/getmsg.cgi

@@ -26,7 +26,7 @@ pre a:visited { color: #220000; }
 #
 # Files MUST be fully qualified and MUST start with this path.
 #
-$messagepath = "/usr/local/www/db/text/";
+$messagepath = "/usr/local/www/mailindex/archive/";
 $messagepathcurrent = "/usr/local/www/mid/archive/";
 $ftparchive = 'ftp://ftp.FreeBSD.org/pub/FreeBSD/doc/mailing-lists/archive';