message: Use new url parser
  Currently it issues the following warning:
  (node:6686) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version. To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect.
diff: const mongoose = require('mongoose');
  module.exports = function (app) {
  - mongoose.connect(app.get('mongodb'), {});
  + mongoose.connect(app.get('mongodb'), { useNewUrlParser: true });
  mongoose.Promise = global.Promise;
  app.set('mongooseClient', mongoose);
  