Cannot Secure Kue

We used to secure Kue with something like this:

```
var app = express();
app.use(express.basicAuth(config.kue.username, config.kue.password));
app.use(kue.app);

var port = config.production ? 21 : 8002;
app.listen(port);
```

This no longer works and the browser just hangs trying to connect.

The issue names no repository file or test; start by reproducing the shown Express setup with kue.app and express.basicAuth, then inspect how the Kue app is mounted. Done means the Kue browser interface responds normally while requiring the configured username and password.

Written by the indexing model from the issue text.