<a href="{% url auth_logout %}">logout</a>
{% else %}
<a href="{% url auth_login %}">login</a>
<br/>
<a href="{% url patchwork.views.user.register %}">register</a>
<a href="{% url auth_logout %}">logout</a>
{% else %}
<a href="{% url auth_login %}">login</a>
<br/>
<a href="{% url patchwork.views.user.register %}">register</a>