User card: use general.role instead of card-specific roles

Also removes admin_menu.roles from some localizations since it is not
used anywhere

src/i18n/pt.json

@@ -35,7 +35,12 @@
     "retry": "Tenta novamente",
     "error_retry": "Por favor, tenta novamente",
     "loading": "A carregar…",
-    "dismiss": "Ignorar"
+    "dismiss": "Ignorar",
+    "role":
+    {
+      "moderator": "Moderador",
+      "admin": "Admin"
+    }
   },
   "image_cropper": {
     "crop_picture": "Cortar imagem",
@@ -615,11 +620,7 @@
     "report": "Denunciar",
     "message": "Mensagem",
     "mention": "Mencionar",
-    "hidden": "Ocultar",
-    "roles": {
-      "moderator": "Moderador",
-      "admin": "Admin"
-    }
+    "hidden": "Ocultar"
   },
   "user_profile": {
     "timeline_title": "Cronologia do Utilizador",