title: Changes on archive-product.php doesn't work
body: <p>I'm trying to customize the standard woocommerce theme and so far that has worked well. I copied all template files from <code>/plugins/woocommerce/templates</code> to <code>/mytheme/woocommerce</code> and customized the files. </p>
  
  <p>But when i'm change something in <code>archive-product.php</code> nothing happens? I even tried to customize this in the core files (<code>/plugins/woocommerce/templates/archive-product.php</code>) but i doesn't work.</p>
  
  <p>I want to change the class of the <code>h1</code> heading: <code>&lt;h1 class="page-title"&gt;&lt;?php woocommerce_page_title(); ?&gt;&lt;/h1&gt;</code>.</p>
  
  <p>So i looked up <strong>all</strong> woocommerce template files, the class <code>page-title</code> occurs only in this one file (to prevent editing the wrong file).</p>
  
  <p><strong>Edit:</strong></p>
  
  <p>In detail, i want to customize the theme used in this path: <a href="http://example.com/product-category/mycategory">http://example.com/product-category/mycategory</a></p>