added TYPO3 v13 compatibility

Author: Markus Timtner

ext_emconf.php

@@ -4,7 +4,7 @@
   'title' => 'MT BACKEND',
   'description' => 'This TYPO3 Extension provides a preview of page properties in the page module, and a some css touchup.',
   'category' => 'be',
-  'version' => '13.0.0',
+  'version' => '13.0.1',
   'state' => 'stable',
   'author' => 'Markus Timtner',
   'author_email' => '[email protected]',