Merge pull request #573 from oragono/l10n_master

New Crowdin translations

languages/fr-FR-irc.lang.json

   "I'll be right back": "De retour dans un instant !",
   "IP address:  %s": "Adresse IP : %s",
   "IRC Operators online": "Opérateurices IRC en ligne",
-  "Input line too long": "",
-  "Insufficient oper privs": "",
+  "Input line too long": "Entrée trop longue",
+  "Insufficient oper privs": "Privilèges opérateurices insuffisants",
   "Insufficient privileges": "Privilèges insuffisants",
   "Internal error": "Erreur interne",
   "Invalid CAP subcommand": "",
   "Invalid vhost": "Vhost invalide",
   "It was rejected for reason: %s": "",
   "JOIN 0 is not allowed": "",
-  "Language %s is not supported by this server": "",
-  "Language preferences have been set": "",
+  "Language %s is not supported by this server": "Le langage %s n’est pas proposé sur ce serveur",
+  "Language preferences have been set": "Vos préférences linguistiques ont été enregistrées",
   "Last active: %s": "Dernière activité : %s",
   "MOTD File is missing": "Message du jour manquant",
   "Malformed username": "Nom erroné",