Bug 23514: Split Call Numbers for all layout types

Bug 23514: Split Call Numbers for all layout types

This patch ensures call numbers are properly split for layout types
other than 'BAR'.

Test plan:

1. Go to Label Creator and choose/create a Label Layout with "Choose
layout type: Biblio"
2. make sure you have at least "itemcallnumber" in Bibliographic data to
print/Data fields
3. check "Split call numbers" box and save the layout (ie testlayout)
4. create a label batch, using items that have a call number (ie
DC611.B848 H84 1997). LCC is used here, but you may try with Dewey as
well.
5. export selected batch using any template and the layout you created
in previous step to a PDF
6. Call numbers are splitted (as expected) in the resulting PDF file
7. edit the layout you created in the previous step (ie testlayout) and
change the  "Choose layout type:" to either Biblio/Barcode (BIBBAR) or
Barcode/Biblio (BARBIB)
8. export the same batch using the same template and layout as before
9. Call numbers are NOT splitted at all

After patch is applied, call numbers splitting functions are applied
even in Biblio/Barcode (BIBBAR) or Barcode/Biblio (BARBIB) layout types.

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