Unsuccessful attempt to properly eager load screenshots.

Currently the virtual attribute "image_url" in the screenshots model
apparently runs one SQL query each to get the packages data.

app/views/packages/_packages_search_results.html.erb

@@ -5,9 +5,7 @@
 <ul>
   <% @packages.each do |package| %>
   <li>
-    <%= package.name %> <i>(<%= package.description %>)</i>
-    - has <%= package.screenshots.count %> screenshots
-    <% if package.screenshots.count>0 %>
+    <% if package.screenshots %>
       <%= image_tag package.screenshots.first.image_url('small') %>
     <% end %>
   </li>