Do not break overview page if existing business-process has invalid config

- Add icon and config file name to broken `business-process`
- Use font-awesome icon

library/Businessprocess/Web/Component/BpDashboardTile.php

@@ -3,10 +3,12 @@
 namespace Icinga\Module\Businessprocess\Web\Component;
 
 use Icinga\Module\Businessprocess\BpConfig;
-use Icinga\Web\Url;
 use ipl\Html\BaseHtmlElement;
 use ipl\Html\Html;
 use ipl\Html\Text;
+use ipl\Web\Url;
+use ipl\Web\Widget\Icon;
+use ipl\Web\Widget\Link;
 
 class BpDashboardTile extends BaseHtmlElement
 {
@@ -16,14 +18,10 @@ class BpDashboardTile extends BaseHtmlElement
 
     public function __construct(BpConfig $bp, $title, $description, $icon, $url, $urlParams = null, $attributes = null)
     {
-        if (! isset($attributes['href'])) {
-            $attributes['href'] = Url::fromPath($url, $urlParams ?: []);
-        }
-
         $this->add(Html::tag(
             'div',
             ['class' => 'bp-link', 'data-base-target' => '_main'],
-            Html::tag('a', $attributes, Html::tag('i', ['class' => 'icon icon-' . $icon]))
+            (new Link(new Icon($icon), Url::fromPath($url, $urlParams ?: []), $attributes))
                 ->add(Html::tag('span', ['class' => 'header'], $title))
                 ->add($description)
         ));

library/Businessprocess/Web/Component/Dashboard.php

@@ -2,8 +2,10 @@
 
 namespace Icinga\Module\Businessprocess\Web\Component;
 
+use Exception;
 use Icinga\Application\Modules\Module;
 use Icinga\Authentication\Auth;
+use Icinga\Module\Businessprocess\BpConfig;
 use Icinga\Module\Businessprocess\ProvidedHook\Icingadb\IcingadbSupport;
 use Icinga\Module\Businessprocess\State\IcingaDbState;
 use Icinga\Module\Businessprocess\State\MonitoringState;
@@ -92,7 +94,20 @@ class Dashboard extends BaseHtmlElement
                 $title = $name;
             }
 
-            $bp = $storage->loadProcess($name);
+            try {
+                $bp = $storage->loadProcess($name);
+            } catch (Exception $e) {
+                $this->add(new BpDashboardTile(
+                    new BpConfig(),
+                    $title,
+                    sprintf(t('File %s has invalid config'), $name . '.conf'),
+                    'file-circle-xmark',
+                    'businessprocess/process/show',
+                    ['config' => $name]
+                ));
+
+                continue;
+            }
 
             if (Module::exists('icingadb') &&
                 (! $bp->hasBackendName() && IcingadbSupport::useIcingaDbAsBackend())