Bug 36876: Correct <span>s around translatable strings in table settings

Bug 36876: Correct <span>s around translatable strings in table settings

This patch corrects the way translatable strings are handled in the
table settings template. The switch to Bootstrap WRAPPERs for the
accordion widget included several errors.

To test, apply the patch and go to Administration -> Table settings.

- Confirm that the sections expand and collapse correctly.
- Test the translation process with a language, e.g. fr-FR:
  - In KTD, run: gulp po:update --lang fr-FR
  - Check fr-FR-staff-prog.po for the line referring to
    koha-tmpl/intranet-tmpl/prog/en/modules/admin/columns_settings.tt:298
  - It should show the whole string "Interlibrary loans"

Signed-off-by: Roman Dolny <roman.dolny@jezuici.pl>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>