title: change filter name in Magento from 'category' to the name of the parent category
body: <p>On a layered category view the list of sub-categories is titled 'Category' (as seen here: <a href="http://demo.magentocommerce.com/bed-and-bath" rel="nofollow">http://demo.magentocommerce.com/bed-and-bath</a>), I would like it to instead be titled with the name of the parent category (if it has a parent, other than the root category). </p>
  
  <p>So in the example at the above link, rather than being:</p>
  
  <pre><code>CATEGORY
  -- Living Room
  -- Bedroom
  </code></pre>
  
  <p>it would be:</p>
  
  <pre><code>FURNITURE
  -- Living Room
  -- Bedroom
  </code></pre>
  
  <p>My main issue seems to be figuring out how to access the category model from within the Mage_Catalog_Block_Layer_View as <code>$this-&gt;getCurrentCategory()</code> doesn't seem to work.</p>
  
  <p>Using Magento ver. 1.5.1.0</p>
  
  <p>Thanks!</p>