Show an alert when ./bootstrap/cachet is not writeable.

app/Composers/DashboardComposer.php

@@ -40,5 +40,6 @@ class DashboardComposer
         $view->withIncidentTemplateCount(IncidentTemplate::count());
         $view->withScheduleCount(Schedule::count());
         $view->withSubscriberCount(Subscriber::isVerified()->count());
+        $view->withIsWriteable(is_writeable(app()->bootstrapPath().'/cachet'));
     }
 }

resources/lang/en/dashboard.php

@@ -11,7 +11,8 @@
 
 return [
 
-    'dashboard' => 'Dashboard',
+    'dashboard'          => 'Dashboard',
+    'writeable_settings' => 'The Cachet settings directory is not writeable. Please make sure that <code>./bootstrap/cachet</code> is writeable by the web server.',
 
     // Incidents
     'incidents' => [

resources/views/layout/dashboard.blade.php

@@ -41,6 +41,18 @@
     <div class="wrapper">
         @include('dashboard.partials.sidebar')
         <div class="page-content">
+            @if(!$is_writeable)
+            <div class="content-wrapper">
+                <div class="row">
+                    <div class="col-sm-12">
+                        <div class="alert alert-info">
+                            {!! trans('dashboard.writeable_settings') !!}
+                        </div>
+                    </div>
+                </div>
+            </div>
+            @endif
+
             @yield('content')
         </div>
     </div>