add language tags to schema

rdfs:label, sh:name, and sh:description are in german language => MUST add language tag

bdnshapes:preferredNameForThePersonShape
    a sh:PropertyShape ;
    sh:path gndo:preferredNameForThePerson ;
    sh:datatype xsd:string ;
    dash:editor dash:TextFieldEditor ;
    dash:singleLine true ;
    sh:name "Name"@de ;
    sh:minCount 1 ;
    sh:maxCount 1 ;
    sh:description "Der bevorzugte Name der Person."@de ;
    sh:order "1"^^xsd:decimal .