title: Static files not served by express when using pug
body: <p>im trying to serve up static files using express and pug as the templating engine but somehow my assets are not being loaded</p>
  
  <p>my files path :</p>
  
  <pre><code>+front
    +views
     +login
        index.pug
       +images
       +js
       +css
       ...
  server.js
  </code></pre>
  
  <p>here is my server code : </p>
  
  <pre><code>app.use(express.static('front')); 
  app.set('views', './front/views')
  app.set('view engine', 'pug')
  
  router.get('/login', (req, res) =&gt; {
    res.render('./Login_v1/login', { title: 'Login', message: 'Login'})    
  })
  </code></pre>
  
  <p>pug code  :</p>
  
  <pre><code>  link(rel='icon' type='image/png' href='/images/icons/favicon.ico')
  </code></pre>