DBnary now extract Danish edition

The Danish language edition has been added to the DBnary extractor due to user demand, mainly to be used through https://www.wikdict.com excellent web site that gets its translation from DBnary.

Danish is the 26th language to be added in DBnary.

As usual, if you spot any issue in the extracted data, do not hesitate to file an issue in DBnary gitlab: https://gitlab.com/gilles.serasset/dbnary/issues