Bug 14441 - TrackClicks cuts off/breaks URLs

Bug 14441 - TrackClicks cuts off/breaks URLs

to test...

1/ set TrackClicks syspref to 'track'

2/ add a problematic multipart url to an item's 'url' field
    example url: http://foo.corg?key1=val1&key2=val2

3/ test url in opac-detail.pl - url is corrupt

4/ apply patch - url is corrct

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Only fixes the item URLs - a follow-up for the URLs
in the bibliographic record (856 for MARC21) is still
needed.

Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit de2a298a0623408c064ed0edbe47795740c814f4)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>