Bug 25082: Don't remove characters from string

Bug 25082: Don't remove characters from string

At the moment, show-lang-041 will either get a code
or an AV description to deal with. If it's a description,
we don't want to remove spaces and other chars from it.

To test:
- Repeat tests from first patch with an AV in LANG category
  that consists of multiple words, has a - and other possible
  punctuation.
- The description should show correctly in OPAC and staff.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>