Add a copy to clipboard button to PIDs
a follow up of #15 (closed):
offer a copy-top-clipboard button, as in https://repository.de.dariah.eu/1.0/dhcrud//21.11113/0000-000B-CAC4-4/landing
a follow up of #15 (closed):
offer a copy-top-clipboard button, as in https://repository.de.dariah.eu/1.0/dhcrud//21.11113/0000-000B-CAC4-4/landing