hotline#155841 : dublicore identifiers may contains isbn or issn. those are...
requested to merge hotline#155841_archires_import_oai_dc_les_identifiers_ne_sont_pas_tous_recuperes into master
hotline#155841 : dublicore identifiers may contains isbn or issn. those are now detected and saved in the unimarc. other dc.identifiers are now saved in 856u unimarc fields.