Update German translation

locales/de.json

@@ -85,9 +85,9 @@
     "Only show latest unwatched video from channel: ": "Nur neueste ungesehene Videos des Kanals anzeigen: ",
     "Only show unwatched: ": "Nur ungesehene anzeigen: ",
     "Only show notifications (if there are any): ": "Nur Benachrichtigungen anzeigen (wenn es welche gibt): ",
-    "Enable web notifications": "",
-    "`x` uploaded a video": "",
-    "`x` is live": "",
+    "Enable web notifications": "Webbenachrichtigungen aktivieren",
+    "`x` uploaded a video": "`x` hat ein Video hochgeladen",
+    "`x` is live": "`x` ist live",
     "Data preferences": "Dateneinstellungen",
     "Clear watch history": "Verlauf löschen",
     "Import/export data": "Daten im- exportieren",
@@ -316,4 +316,4 @@
     "Videos": "Videos",
     "Playlists": "Wiedergabelisten",
     "Current version: ": "Aktuelle Version: "
-}
+}