Bug 14163: Acq order form: rename 'Show all' to 'Show inactive'

Bug 14163: Acq order form: rename 'Show all' to 'Show inactive'

On the order form there is a checkbox next to the fund list labelled
'show all'. Checking the checkbox will result in the inactive funds
showing in the pull down list as well.

The patch renames the label to 'Show inactive' to make the purpose
more clear.

To test:
- Create a new order
- Verify the label has changed as described above
- Decide if the change makes sense

Signed-off-by: tadeasm <tadeas.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>