icingaweb2/application/layouts/scripts/body.phtml

<?php

use Icinga\Web\Url;
use Icinga\Web\Notification;
use Icinga\Authentication\Manager as Auth;

if (Auth::getInstance()->isAuthenticated()): ?>
 <div id="header">
   <ul id="notifications"><?php

$notifications = Notification::getInstance();
if ($notifications->hasMessages()) {
    foreach ($notifications->getMessages() as $m) {
        echo '<li class="' . $m->type . '">' . $this->escape($m->message) . '</li>';
    }
}
   ?></ul>
   <div id="logo" data-base-target="_main"><a href="<?= $this->href('/dashboard') ?>"><img src="<?= $this->href('img/logo_icinga-inv.png') ?>" class="logo" /></a>
 </div>
 </div>
<!--
  <ul class="tabs" >
    <li class="dropdown">
      <a href="#" class="dropdown-toggle">
      <?= $this->img('icons/user.png') ?>
      <?= $this->escape($this->auth()->getUser()->getUsername()) ?>
        <b class="caret"></b>
      </a>
      <ul class="dropdown-menu">
        <li><a href="<?= $this->href('/preference') ?>"><?= $this->translate('Preferences'); ?></a></li>
        <li><a href="<?= $this->href('/authentication/logout'); ?>" title="Logout"><?= $this->translate('Logout'); ?></a></li>
      </ul>
    </li>
  </ul>
-->

 <div id="sidebar">
  <?= $this->layout()->navigation ?>
  <?php echo $this->render('parts/navigation.phtml') ?>
 </div>
 <div id="main">
  <div id="col1" class="container" data-icinga-url="<?= Url::fromRequest() ?>">
   <?= $this->render('inline.phtml') ?>
  </div>
  <div id="col2" class="container">
   <ul class="tabs"></ul>
  </div>
  <div id="col3" class="container">
  </div>
 </div><!-- END of main -->
<?php else: ?>
<?= $this->render('inline.phtml') ?>
<?php endif ?>