Emit dc:source from relatedItem[@type='original']
Emit dc:source from relatedItem[@type='original']

Sources need to be declared using dc:source element. The script wrongly
generated dcterms:isPartOf elements from the source relatedItem.

Relates to https://jira.slub-dresden.de/browse/CMR-543

qucosa/qucosa-fcrepo-xmetadissplus