Bug 12933: (QA followup) Add missing notice templates and other small fixes

Bug 12933: (QA followup) Add missing notice templates and other small fixes

- Fixes page title of slip print window: Members > Patrons
- Fixes error message if no notice template is found
- Fixes a stray template variable that resulted in the
  borrower number showing in the 'Print' pull down
- Fixes xt/sample_notices.t by adding the sample notice to
  it-IT and es-ES

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>