<h3>Choose a registration:</h3>
<ul>
{% for r in registers %}
    <li><a href="/signup/{{ r.uuid.hex }}">{{ r.url }}</a></li>
{% endfor %}
</ul>

<h3>Choose a registration:</h3>
<ul>
{% for r in registers %}
    <li><a href="/signup/{{ r.uuid.hex }}">{{ r.name }}</a></li>
{% endfor %}
</ul>

Choose register template shows register name instead of url
Choose register template shows register name instead of url
