<li class="{{role}}"
    {[ if (role === "moderator") { ]}
       title="{{desc_moderator}}"
    {[ } ]}
    {[ if (role === "participant") { ]}
       title="{{desc_participant}}"
    {[ } ]}
    {[ if (role === "visitor") { ]}
       title="{{desc_visitor}}"
    {[ } ]}
>{{nick}}</li>
