Bug 24391: Remove event attributes from patron clubs edit template

Bug 24391: Remove event attributes from patron clubs edit template

This patch removes "onclick" attributes from the template for adding and
editing patron club templates.

To test, apply the patch and go to Tools -> Patron clubs -> New club
template.

Test the process of adding and deleting both club and enrollment fields.
Test during the template add process and when editing an existing
template.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>