Added language and theme settings.

lang/ca-ES.json

@@ -28,6 +28,7 @@
   "label.enable-share-url": "Activa l'enllaç per compartir",
   "label.invalid": "Invàlid",
   "label.invalid-domain": "Domini invàlid",
+  "label.language": "Language",
   "label.last-days": "Últims {x} dies",
   "label.last-hours": "Últimes {x} hores",
   "label.logged-in-as": "Connectat com {username}",
@@ -50,6 +51,7 @@
   "label.settings": "Configuració",
   "label.share-url": "Enllaç per compartir",
   "label.single-day": "Un sol dia",
+  "label.theme": "Theme",
   "label.this-month": "Aquest mes",
   "label.this-week": "Aquesta setmana",
   "label.this-year": "Aquest any",