title: Do something whenever authentication is successful
body: <p>I need to implement a <code>lastLoggedIn</code> date field that's updated to the current date everytime a user authenticates successfully.</p>
  
  <p>I thought I might be able to do that by registering an after-hook on the <code>/auth/local</code> service, but those hooks are never invoked:</p>
  
  <pre><code>  app.service('/auth/local').after({
      all: [
        hook =&gt; console.log(hook.result),
      ],
    });
  </code></pre>
  
  <p>That <code>console.log</code> never runs. If this is not the way to do this kind of thing, how should I go about doing it?</p>