Bug 37595: Double HTML escaped ampersand in pagination bar

Bug 37595: Double HTML escaped ampersand in pagination bar

This patch removes escaping of ampersands in the part of
guided_reports.pl that builds information for the pagination routine.
The information is going to be escaped in a later step.

To test, apply the patch and go to Reports.

- If necessary, create a report which will return more than 20 results.
- Run the report. You should see a pagination bar at the top of the
  table of results.
- View the page source and look for the markup for the pagination menu.
  Searching for 'rel="start"' works well.
- Confirm that you see '&' between the link parameters instead of
  '&', e.g.

  guided_reports.pl?id=347&op=run&limit=20&want_full_chart=0&page=1

Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>