<a class="s contacts-tab
   {[ if (is_current) { ]} current {[ } ]}
   {[ if (num_unread) { ]} unread-msgs {[ } ]}"
       data-id="users" href="#users">
    {{{label_contacts}}}
    {[ if (num_unread) { ]}
        <span class="msgs-indicator">{{{ num_unread }}}</span>
    {[ } ]}
</a>
