cubicweb-datacat #11475760 conceptscheme http://purl.org/adms/licencetype/1.0 export titles with None value [validation pending]

See https://demo.logilab.fr/datacat/dataset/34546?vid=dcat.rdf.complete

priorityminor
typebug
done in0.7.0
load left0.000
closed by#e052beee3c94 Extract functions to add triples to RDF graph
patchExtract functions to add triples to RDF graph [applied]