[PP] Keys with final dots

[pasqLisena]

Sometimes the keys end with a final dot. Example: "Fa majeur."@fr http://data.doremus.org/expression/b1d12b34-46a1-3d26-a6ad-efef75b1db7a/key/fa_majeur.

This prevents the converter to match with the controlled vocabulary.

[pierrechoffe]

To be fixed at the conversion level? The dot is an error (I mean: there is no situation where a dot would be required or meaningful).

[rtroncy]

Yes, the converter will handle this case, doing a specific parsing that will remove the last dot(s). But this shows that converting literals by controlled vocabularies helps to detect inconsistent annotation practices