None checks

templates/main.html

@@ -25,10 +25,19 @@
                         (<a href="/remove/{{ pin }}">remove</a>)
                         </p>
                         <p>
-                            <ul>
-                                <li>Last turned on: {{ pins[pin].on_date }} {{ pins[pin].on_time }}</li>
-                                <li>Device Wattage: {{ pins[pin].wattage }} </li>
-                            </ul>
+                        <ul class="device_details">
+                            {% if pins[pin].one_date != None or  pins[pin].on_time %}
+                                <li>
+                                    {% if  pins[pin].one_date != None %}
+                                        {{ pins[pin].on_date }}
+                                    {% endif %}
+                                    {% if pins[pin].on_time != None %}
+                                        {{ pins[pin].on_time }}
+                                    {% endif %}
+                                </li>
+                            {% endif %}
+                            <li>Device Wattage: {{ pins[pin].wattage }} </li>
+                        </ul>
                         </p>
                     {% endif %}
             {% endif %}