FIX(sill): allow to import SILL and Wikidata IDs

Documentation/For_developers/Features/SILL/README.md

...or_developers/Features/SILL/data/SQL_maj_softwareSILL.sql

...pers/Features/SILL/data/SQL_maj_softwareSILL_notFound.sql

...ion/For_developers/Features/SILL/data/SQL_maj_tagSILL.sql

...evelopers/Features/SILL/data/SQL_maj_tagSILL_notFound.sql

...lopers/Features/SILL/data/comptoir-du-libre_export_v1.csv

...opers/Features/SILL/data/comptoir-du-libre_export_v1.json

...ntation/For_developers/Features/SILL/data/prepare_SQL.php

Documentation/For_developers/Features/SILL/data/sill.csv

Documentation/For_developers/Features/SILL/data/sill.json