corrected a few errors, and added a namedIndividual.
change swedish translation of itemd efinition product variant
Swedish definitions and labels changed. Minor changes to the english library.
Skos:definition and notes added for validationMethods and verificationMethods.
minor updates to the requirement refdata
Added skos:definitions for some of the requirement-related ref data
Changed comments and preflabels according to FMV review
Corrected a few comments and preflabels according to FMV review