Attempt to match EAC relations internally, refs #6660
Attempt to match EAC relations internally, refs #6660

Relax URL matching requirements and check if the resource property is not set
in order to avoid errors during the import. Database lookup is done internally
during the route matching.

CENDARI/atom,kyfr59/atom-cg35,artefactual/binder,Surfrdan/atom,artefactual/atom,Surfrdan/atom,CENDARI/atom,Surfrdan/atom,artefactual/binder,artefactual/atom,kyfr59/atom-cg35,CENDARI/atom,kyfr59/atom-cg35,artefactual/binder,artefactual/atom,artefactual/binder