Update `French` translation

Currently translated at 8.7% (11 of 126 strings)

Translation: Wiki-Bot/Dashboard
Translate-URL: https://translate.wikibot.de/projects/wiki-bot/dashboard/fr/

dashboard/i18n/fr.json

@@ -7,6 +7,11 @@
         " "
     ],
     "general": {
-        "delete": "Supprimer"
+        "delete": "Supprimer",
+        "invite": "Inviter Wiki-Bot",
+        "language": "Changer la langue",
+        "login": "Connexion",
+        "logout": "Déconnexion",
+        "rcscript": "Modifications récentes"
     }
 }