title: Where to Disconnect() the `default_product_search_listener` in Satchmo
body: <p>I don't want to use the Default Satchmo search listener. I've created my own search listener instead. </p>
  
  <p>Where is the best place to disconnect the default search listener? </p>
  
  <pre><code># This is what I need to do...
  from satchmo_store.shop.listeners import default_product_search_listener
  application_search.disconnect(default_product_search_listener, sender=Product)
  </code></pre>
  
  <p>I was trying to do it in my app's <code>__init__.py</code> and the my app's <code>models.py</code>, but both of those seemed to run <strong><em>before</em></strong> Satchmo actually <code>connect</code>s the Signal, so they don't properly disconnect things. Where can I run my disconnect code so that I can be assured Satchmo has already connected its listener?</p>