Bug 14423 : XSS issues in marc_subfields_structure
1/ Hit a url like http://localhost:8081/cgi-bin/koha/admin/marc_subfields_structure.pl?op=add_form&tagfield=%22/%3E%3Cscript%3Ealert%28%27oh%20noes%27%29%3C/script%3E
2/ Notice all the alert boxes
3/ Apply patch
4/ Reload page, no more alerts
5/ Test functionality still works
Signed-off-by: Jonathan Druart <jonathan.druart@koha-community.org> Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de> Signed-off-by: Liz Rea <wizzyrea@gmail.com>