fix: upgrade webpack-dll-bundles-plugin

 The definition of the `*.ts` loader is getting more complex.
 We need AOT compliance so we use `angular2-template-loader`
 We need lazy loading so we use `ng-router-loader`
 And of course, we need to compile TS to JS, `awesome-typescript-loader`

 We can't explain all that in the configuration file but we can use Webpack 2 new loader syntax and use objects instead of literal string to configure the loaders.