Bug 31563: Make zero claims show correctly for translations

Bug 31563: Make zero claims show correctly for translations

A tag that only contains 0 is turned into an empty tag by
the translation scripts. This turns "Claims ( 0 0 )" into
"Claims (   )" in translated templates.

To test:
* Install an additional language (fr-FR, es-ES) and activate
  it in the system preferences
* Look at the checkouts and details tabs in any patron account
  in the staff interface
* Verify the claims tab shows without the zeros as described above
* Apply the patch
* Update the translation so the templates are recreated with the change
* Verify that the 0 0 now show correctly.

Signed-off-by: Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit f4029d7b71edc6472f330a7f8c8c60005205154b)
Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>