old_contents: command: 'echo ""',
  refreshFrequency: 3600000,
  
  style: [
  	'@import "/common/base.css"',
  	'@import "/common/fira/fira.css"',
  ].join('\n'),
  
  render: function(output) {
  	return ''
  },
  
new_contents: command: 'echo ""',
  refreshFrequency: 3600000,
  
  render: function(output) {
  	return [
  		'<link rel="stylesheet" type="text/css" href="/common/base.css">',
  		'<link rel="stylesheet" type="text/css" href="/common/fira/fira.css">',
  	].join('\n')
  },
  
subject: Use links to load the css files