Commentaire SocialNetwork (debut)
Commentaire SocialNetwork + correction mineurs
Modifs Javadoc de Avis, Book, Film, Item et Member
Merge branch 'lot1' of https://github.com/nanori/INF112.git into lot1
MAJ Javadoc
Debug Social Network et Member

Ajout "equals" dans Member
Test si "member == null" avant authentification