renders error partial only if story has errors

* explicitly not calling valid? as this revalidates all stories

app/views/rb_stories/_story.html.erb

@@ -16,6 +16,6 @@
   <div class="fixed_version_id"><%= story.fixed_version_id %></div>
   <div class="higher_item_id"><%= !defined?(higher_item) || higher_item.nil? ? '' : higher_item.id %></div>
   <div class="meta">
-    <%= render :partial => "shared/model_errors", :object => story.errors %>
+    <%= render(:partial => "shared/model_errors", :object => story.errors) if story.errors.size > 0 %>
   </div>
 </li>