Add dictionary to retrieve the Id of a domain by its name

EDdA/data.py

@@ -30,5 +30,7 @@ domains = [
            'Pêche', 'Religion', 'Spectacle', 'Superstition'
         ]
 
+domainId = dict([(domains[k], k) for k in range(0, len(domains))])
+
 def domain(articles, name):
     return articles[articles.ensemble_domaine_enccre == name]