Bug 21066: Update English sample notices
Applies to sample notices and sample news.
Replace timestamp by publicationdate.
Also adjust notice in TemplateToolkit.t.
Test plan:
Run dbrev and verify if ISSUESLIP refers to opac_news.publicationdate.
Run t/db_dependent/Letters/TemplateToolkit.t
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>