title: Catalog Price Rules applied to special_price
body: <p>First question on stackoverflow...i am excited :)</p>
  
  <p>Currently magento is using the special price if its lower than the applied catalog price rule. If the catalog price rule makes the product cheaper than the special price, then the catalog price rule defines the shop price. </p>
  
  <blockquote>
    <p>I am looking for an elegant way to make catalog price rules be applied
    to the special price (additionally). Maybe there is some store config for it? Maybe
    there is some neat observer way?</p>
  </blockquote>
  
  <p>Thank you so much! </p>