Improve user editing template

apps/userprofile/templates/user/user_update_form.html

 {% extends "base.html" %}
 
 {% block content %}
+<h3>Edit user <strong>{{ user.username }}</strong></h3>
 <form action="" method="post">{% csrf_token %}
   {{ form.as_p }}
   <input type="submit" value="Update" />