title: Chaplinjs Composition with two different Site View
body: <p>I have to two different Site Views with different regions.<br>
  How can I in proper way write composition in beforeAction method ?<br>
  What I want</p>
  
  <pre><code>beforeAction: function(params, route) {
    if (route === 'sessions#new') {
      this.reuse('site', OutsideSiteView);
      this.reuse('header', OutsideHeaderView);
      this.reuse('footer', OutsideFooterView);
    } else {
      this.reuse('site', SiteView);
      this.reuse('header', HeaderView);
      this.reuse('footer', FooterView);
    }
  }
  </code></pre>