Searching for people now also matches usernames. Fixes #17.

contributors/templates/contributors/contributors.html

@@ -49,7 +49,7 @@ The information is based on <a href="{% url 'sources:list' %}">our current knowl
 <tbody>
     {% for p in people %}
     <tr>
-      <td><a href={{p.user.get_absolute_url}}>{{p.user.full_name|default:p.user}}</a></td>
+        <td data-search="{{p.user.username}}"><a href={{p.user.get_absolute_url}}>{{p.user.full_name|default:p.user}}</a></td>
         <td data-sort="{{p.until|date:"m"}}">{{p.until|date:"F Y"}}</td>
     </tr>
     {% endfor %}