adds missing translations

web/src/lib/i18n/locales/nl.json

@@ -116,6 +116,7 @@
   "trail": "{n, plural, =1 {Route} other {Routes}}",
   "trails-for-you": "Routes voor jou",
   "units": "Eenheden",
+  "upload-file": "Upload bestand",
   "upload-gpx": "GPX uploaden",
   "username": "Gebruikersnaam",
   "waypoints": "Via-punten",