title: Grunt keeps removing my absolute paths
body: <p>I have references to some external JS files in my index.html like this:</p>
  
  <pre><code>&lt;!-- build:js(app) /scripts/vendor.js --&gt;
  &lt;!-- bower:js --&gt;
  &lt;script src="/bower_components/jquery/jquery.js"&gt;&lt;/script&gt;
  &lt;script src="/bower_components/angular/angular.js"&gt;&lt;/script&gt;
  &lt;script src="/bower_components/jquery-ui/ui/jquery-ui.js"&gt;&lt;/script&gt;
  &lt;!-- endbower --&gt;
  &lt;!-- endbuild --&gt;
  </code></pre>
  
  <p>Every time I run <code>grunt serve</code> (<a href="https://github.com/DaftMonk/generator-angular-fullstack" rel="nofollow">generator-angular-fullstack</a>), the initial slashes are removed (<code>"/bower_components/..."</code> → <code>"bower_components/..."</code>), which ruins my pages >1 steps down in the hierarchy.</p>
  
  <p>Is there a quick fix?</p>