Bug 28179: (follow-up) Remove console.log

Bug 28179: (follow-up) Remove console.log

This patch removes a "console.log" from detail.tt and replaces it with
similar output to the user. It will probably never be triggered, but
better to handle it gracefully than have a hidden log.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Rasmus Leißner <rasmus.leissner@solutions-factory.de>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>