title: Ignore file with CSS manifest?
body: <p>I was wondering if there was a way to ignore a css file from being added to the manifest application.css file.</p>
  
  <p>The reason why I want to do this is that I have two versions of the site, a mobile version, an an web version. The mobile version's css is currently being added to the manifest, and messing with the style of the main page.</p>
  
  <p>Is there anyway to configure the manifest file to exclude a certain css file?</p>