Change default api url to 3456 (Vikunja default)

public/index.html

@@ -30,7 +30,7 @@
 	// This variable points the frontend to the api.
 	// It has to be the full url, including the last /api/v1 part and port.
 	// You can change this if your api is not reachable on the same port as the frontend.
-	window.API_URL = 'http://localhost:8080/api/v1'
+	window.API_URL = 'http://localhost:3456/api/v1'
     //
 </script>
 </body>