Resolve "Do not allow to add personal notes for cancelled lessons"

Closes #82 (closed)

aleksis/apps/alsijil/templates/alsijil/partials/lesson_status_icon.html

@@ -8,17 +8,13 @@
   {% period_to_time_start week period.period as time_start %}
   {% period_to_time_end week period.period as time_end %}
 
-  {% if now_dt > time_end %}
+  {% if period.get_substitution.cancelled %}
+    <i class="material-icons red-text tooltipped {{ css_class }}"  data-position="bottom" data-tooltip="{% trans "Lesson cancelled" %}" title="{% trans "Lesson cancelled" %}">cancel</i>
+  {% elif now_dt > time_end %}
     <i class="material-icons red-text tooltipped {{ css_class }}"  data-position="bottom" data-tooltip="{% trans "Missing data" %}" title="{% trans "Missing data" %}">history</i>
   {% elif now_dt > time_start and now_dt < time_end %}
     <i class="material-icons orange-text tooltipped {{ css_class }}"  data-position="bottom" data-tooltip="{% trans "Pending" %}" title="{% trans "Pending" %}">more_horiz</i>
-  {% else %}
-    {% if period.get_substitution %}
-      {% if period.get_substitution.cancelled %}
-        <i class="material-icons red-text tooltipped {{ css_class }}"  data-position="bottom" data-tooltip="{% trans "Lesson cancelled" %}" title="{% trans "Lesson cancelled" %}">cancel</i>
-      {% else %}
-        <i class="material-icons orange-text tooltipped {{ css_class }}"  data-position="bottom" data-tooltip="{% trans "Substitution" %}" title="{% trans "Substitution" %}">update</i>
-      {% endif %}
-    {% endif %}
+  {% elif period.get_substitution %}
+    <i class="material-icons orange-text tooltipped {{ css_class }}"  data-position="bottom" data-tooltip="{% trans "Substitution" %}" title="{% trans "Substitution" %}">update</i>
   {% endif %}
 {% endif %}