To test:
1. Search for a SCO system preference like SCOUserJS.
2. Note that there is a console error on that screen and you cannot open editor.
3. Apply patch
4. Reload the page.
5. No more console error and you can now edit the system pref!
Signed-off-by: Sally <sally.healey@cheshiresharedservices.gov.uk> Signed-off-by: Nick Clemens <nick@bywatersolutions.com> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>