Don't try to send notification email if assigned_to is blank

- Supports unassigned tasks

todo/templates/todo/email/assigned_body.txt

@@ -10,9 +10,6 @@ Note: {{ task.note }}
 {% endautoescape %}
 {% endif %}
 
-
-
-
 Task details/comments:
 http://{{ site }}{% url 'todo:task_detail' task.id %}
 

todo/utils.py

@@ -29,7 +29,9 @@ def toggle_deleted(request, deleted_items):
 
 
 def send_notify_mail(request, new_task):
-    # Send email
+    # Send email to assignee when task is assigned to someone else.
+    # Unassigned tasks should not try to notify.
+    if new_task.assigned_to:
         current_site = Site.objects.get_current()
         email_subject = render_to_string("todo/email/assigned_subject.txt", {'task': new_task})
         email_body = render_to_string(