Bug 18435 - Language entered in Materials Specified does not display when items are...

Bug 18435 - Language entered in Materials Specified does not display when items are checked out and checked in

This problem stems from bug 17642, if items.materials is not linked to
an authorized value the contents are being tossed out. We shuold display
them instead

To test:
1 - Ensure items.materials 952$3 is not mapped to an authorized value
2 - Add a value to an item
3 - Check the item out, note the materials does not display
4 - Check the item in, note the materials does not display
5 - Apply patch
6 - Check the item out, note the materials does display
7 - Check the item in, note the materials does display

Followed test plan, message about material displays as expected
whil checking out and in.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>