title: Angular 2 Login Module with template
body: <p>I have now</p>
  
  <p>One <strong>AppModule</strong> which has a number of components and one AppCompoennt which is the template componnet with the <strong>router-outlet</strong> directive.</p>
  
  <p>I want in some way create an <strong>AuthModule</strong> which has its own template AuthComponent between Login, Register Components. </p>
  
  <ol>
  <li><p>When user has logged in </p></li>
  <li><p>it should navigate to the HomeComponent which is rendering in the AppComponent in AppModule.</p></li>
  <li><p>And now the AppComponent is used as long the user is logged in. When user logout.</p></li>
  <li>It should navigate back to AuthModule.</li>
  </ol>
  
  <p>It is possible to have two template compoents and navigate between them?</p>