fix missing table for empty queryset in examples

Author: trco

examples/templates/_books_table.html

@@ -36,6 +36,9 @@
         </button>
       </td>
     </tr>
+  {% empty %}
+    <p class="no-books text-primary">No books added yet.</p> 
   {% endfor %}
+
   </tbody>
 </table>

examples/templates/index.html

@@ -56,11 +56,7 @@ <h4>
           {% if 'type' in request.GET %}
             <p class="filtered-books">Filtered books.</p>
           {% endif %}
-            {% if books %}
-              {% include "_books_table.html" %}
-            {% else %}
-              <p class="no-books text-primary">No books added yet.</p>
-            {% endif %}
+          {% include "_books_table.html" %}
           </div>
         </div>
       </div>