Use same view script in monitoring and icingadb for Access Denied message

- Host|ServiceController: The extended class `CompatController` has its own tabs. Therefore, set the view script tabs to null
  to avoid creating tabs twice.
- View-scripts: Add a condition to create tabs only when the `monitoring` backend (ido[Host|Service]Controller) is used.

application/controllers/HostController.php

@@ -5,6 +5,7 @@ namespace Icinga\Module\Businessprocess\Controllers;
 use Icinga\Module\Businessprocess\IcingaDbObject;
 use Icinga\Module\Icingadb\Model\Host;
 use Icinga\Web\Url;
+use ipl\Html\HtmlString;
 use ipl\Stdlib\Filter;
 use ipl\Web\Compat\CompatController;
 
@@ -27,6 +28,10 @@ class HostController extends CompatController
             $this->redirectNow(Url::fromPath('icingadb/host')->setParams($this->params));
         }
 
+        $this->getTabs()->disableLegacyExtensions();
+
         $this->view->host = $hostName;
+        $this->view->tabs = null; // compatController already creates tabs
+        $this->addContent(HtmlString::create($this->view->render('ido-host/show.phtml')));
     }
 }

application/controllers/ServiceController.php

@@ -5,6 +5,7 @@ namespace Icinga\Module\Businessprocess\Controllers;
 use Icinga\Module\Businessprocess\IcingaDbObject;
 use Icinga\Module\Icingadb\Model\Service;
 use Icinga\Web\Url;
+use ipl\Html\HtmlString;
 use ipl\Stdlib\Filter;
 use ipl\Web\Compat\CompatController;
 
@@ -32,7 +33,11 @@ class ServiceController extends CompatController
             $this->redirectNow(Url::fromPath('icingadb/service')->setParams($this->params));
         }
 
+        $this->getTabs()->disableLegacyExtensions();
+
         $this->view->host = $hostName;
         $this->view->service = $serviceName;
+        $this->view->tabs = null; // compatController already creates tabs
+        $this->addContent(HtmlString::create($this->view->render('ido-service/show.phtml')));
     }
 }

application/views/scripts/ido-host/show.phtml

@@ -3,9 +3,11 @@
 /** @var \Icinga\Web\Widget\Tabs $tabs */
 /** @var string $host */
 ?>
+<?php if ($tabs): ?>
 <div class="controls">
     <?= $tabs->showOnlyCloseButton() ?>
 </div>
+<?php endif ?>
 <div class="content restricted">
     <h1><?= $this->translate('Access Denied') ?></h1>
     <p><?= sprintf($this->translate('You are lacking permission to access host "%s".'), $this->escape($host)) ?></p>

application/views/scripts/ido-service/show.phtml

@@ -4,9 +4,11 @@
 /** @var string $host */
 /** @var string $service */
 ?>
+<?php if ($tabs): ?>
 <div class="controls">
     <?= $tabs->showOnlyCloseButton() ?>
 </div>
+<?php endif ?>
 <div class="content restricted">
     <h1><?= $this->escape($this->translate('Access Denied')) ?></h1>
     <p><?= $this->escape(sprintf($this->translate('You are lacking permission to access service "%s" on host "%s"'), $service, $host)) ?></p>