Implement manual selection of oaipmh prefix for endpoints/schema assignments
e.g. cmdi can often not automatically be detected
(from redmine: issue id 614, created on 2018-01-22tgradl, closed on 2018-01-24)
e.g. cmdi can often not automatically be detected
(from redmine: issue id 614, created on 2018-01-22tgradl, closed on 2018-01-24)