various enhancements for new tabs and bug fixes

templates/list_form.html

@@ -73,9 +73,11 @@
             </div>
         </div>
 
+        {% if prefill_task_id is defined and prefill_task_id %}<input type="hidden" name="task_id" value="{{ prefill_task_id }}">{% endif %}
+        {% if prefill_meeting_id is defined and prefill_meeting_id %}<input type="hidden" name="meeting_id" value="{{ prefill_meeting_id }}">{% endif %}
         <div class="form-actions">
             <button type="submit" class="btn btn-primary">{{ 'Save Changes' if item else 'Create List' }}</button>
-            <a href="{{ '/lists/' ~ item.id if item else '/lists' }}" class="btn btn-secondary">Cancel</a>
+            <a href="{{ '/tasks/' ~ prefill_task_id ~ '?tab=lists' if prefill_task_id is defined and prefill_task_id else ('/lists/' ~ item.id if item else '/lists') }}" class="btn btn-secondary">Cancel</a>
         </div>
     </form>
 </div>