Bug 8378 - show all items columns and new items.fine

This allows users to select any columns from items and adds new
items.fine field introduced by previous patch to user interface.

Note: This works as expected. items.fine appears as an option and gets inserted in the notice template as expected.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>

tools/letter.pl

@@ -195,8 +195,9 @@ sub add_form {
     }
     else {
         push @{$field_selection}, add_fields('biblio','biblioitems'),
-            {value => q{},             text => '---ITEMS---'  },
+            add_fields('items'),
             {value => 'items.content', text => 'items.content'},
+            {value => 'items.fine',    text => 'items.fine'},
             add_fields('borrowers');
         if ($module eq 'circulation') {
             push @{$field_selection}, add_fields('opac_news');