Update Danish translation

locales/da.json

@@ -44,7 +44,7 @@
     "Export data as JSON": "Exporter data som JSON",
     "Delete account?": "Slet konto?",
     "History": "Historik",
-    "An alternative front-end to YouTube": "",
+    "An alternative front-end to YouTube": "En alternativ forside til YouTube",
     "JavaScript license information": "JavaScript licens information",
     "source": "kilde",
     "Log in": "Log på",
@@ -73,7 +73,7 @@
     "Default comments: ": "Standard kommentarer: ",
     "youtube": "youtube",
     "reddit": "reddit",
-    "Default captions: ": "",
+    "Default captions: ": "Standard undertekster: ",
     "Fallback captions: ": "",
     "Show related videos: ": "",
     "Show annotations by default: ": "",