More improvements

. Changed checkaddress.cgi to be more informative about other fields
  such as retention and comment.
. Changed maps main script to use full list record so as to allow the
  ability to report individual fields in the list record instead of just
  returning rule
. Changed detail.cgi to use list record instead of just rule
. Changed detail.cgi to handle corner cases where there are 1 less than
  the number of lines to be displayed.
. Added retention to Returned report
. Fixed font size problem with comment
. Made Checkaddress window a little bigger.
. MAPS.pm: Changed the way the ReturnSenders returns senders. A little
  more array manipulation but more accurate. Also made sure email
  addresses are downshifted before adding to log table.