movim_ynh/sources/app/widgets/Groups/_groups_header.tpl

<div>
    <ul class="list middle">
        <li>
            <span id="menu" class="primary on_mobile icon active" onclick="MovimTpl.toggleMenu()"><i class="zmdi zmdi-menu"></i></span>
            <span class="primary on_desktop icon"><i class="zmdi zmdi-pages"></i></span>
            <form>
                <div>
                    <div class="select">
                        <select onchange="window[this.value].apply(this, [this.options[this.selectedIndex].dataset['server']]);" name="language" id="language">
                            <option value="Groups_ajaxSubscriptions" selected="selected">{$c->__('groups.subscriptions')}</option>
                            {loop="$servers"}
                                {if="!filter_var($value->server, FILTER_VALIDATE_EMAIL)"}
                                    <option value="Groups_ajaxDisco" data-server="{$value->server}">{$value->server} - {$value->name} ({$value->number})</option>
                                {/if}
                            {/loop}
                        </select>
                    </div>
                </div>
            </form>
        </li>
    </ul>
</div>