Fix "user-not-logged-in" error on Panel login

Closes #7.

Author: lukasbestle

src/config/areas.php

@@ -1,10 +1,16 @@
 <?php
 
+use Kirby\Exception\LogicException;
 use LukasBestle\Versions\Plugin;
 
 return [
     'versions' => function ($kirby) {
-        $accessPermission = Plugin::instance()->hasPermission('access');
+        try {
+            $accessPermission = Plugin::instance()->hasPermission('access');
+        } catch (LogicException $e) {
+            // area was loaded by Kirby without a logged-in user
+            $accessPermission = false;
+        }
 
         return [
             'label' => t('view.versions'),