Add maintenance pages

app/View/Components/ErrorBlock.php

@@ -14,6 +14,10 @@ class ErrorBlock extends Component
             'icon' => 'ban',
             'message' => '%s'
         ],
+        'not-found' => [
+            'icon' => 'sticky-note-off',
+            'message' => "404: This page does not exist."
+        ],
         'page-not-allowed' => [
             'icon' => 'shield-ban',
             'message' => "You do not have permission to access this page.\nRequired permission: %s"
@@ -21,6 +25,10 @@ class ErrorBlock extends Component
         'user-state-not-valid' => [
             'icon' => 'shield-ban',
             'message' => "You do not have permission to access this page.\nYour user profile is incomplete: %s\nGo back to the forum for more details."
+        ],
+        'server-error' => [
+            'icon' => 'bomb',
+            'message' => "500: Internal Server Error."
         ]
     ];