Upgrade winston

Our log library got a new major version which should be implemented.

That's exactly what this patch does. Implementing the new version of the
logging library.

Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>

lib/config/default.js

@@ -7,6 +7,7 @@ module.exports = {
   urlPath: '',
   host: '0.0.0.0',
   port: 3000,
+  loglevel: 'info',
   urlAddPort: false,
   allowOrigin: ['localhost'],
   useSSL: false,