Bug 19034: XSS Flaws in Cities

Bug 19034: XSS Flaws in Cities

1. Hit /cgi-bin/koha/admin/cities.pl
2. Enter <IFRAME SRC="javascript:alert('XSS');"></IFRAME> search cities box.
3. Notice the iframe is executed.
4. Apply patch.
5. Reload page, and enter iframe again on search cities box.
6. Notice it is no longer executed.

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 8b294c5a4bece7086688fb44c7c45a1ee820247c)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>