Explicitly point to engagement calendar URL from the side menu

Author: patriknordlen

dojo/templates/base.html

@@ -243,7 +243,7 @@
                             {% endif %}
                             {% if request.user.is_staff %}
                                 <li>
-                                    <a href="{% url 'calendar' %}"><i class="fa fa-calendar fa-fw"></i>
+                                    <a href="{% url 'engagement_calendar' %}"><i class="fa fa-calendar fa-fw"></i>
                                         <span>Calendar</span></a>
                                 </li>
                                 <li>