Refine "Patrons statistics" report, fix highlight, remove CGI::scrolling_lists.

Refine "Patrons statistics" report, fix highlight, remove CGI::scrolling_lists.

At client request, I added code for a rowtitle_display and coltitle_display.  This
allows the script to substitute human-readable lables into the table instead of just
the literal hashkeys.  For this client with dozens of numerical patron categorycodes
having a row titled "29" was not very useful.

I cleaned up the templates and a lot of the report code.  It is of the same style as
the other copy/paste reports and still need further cleanup.  Added sql and debug
feedback (default styled to hidden), as I have for other reports.

Signed-off-by: Joshua Ferraro <jmf@liblime.com>