Fixes #1517 Selecting image in ckeditor has been addressed

include/utils/VtlibUtils.php

@@ -695,7 +695,7 @@ function vtlib_purify($input, $ignore = false) {
'data' => true
);
-            include_once ('libraries/htmlpurifier410/library/HTMLPurifier.auto.php');
+            include_once __DIR__ . '/../../libraries/htmlpurifier410/library/HTMLPurifier.auto.php';
$config = HTMLPurifier_Config::createDefault();
$config->set('Core.Encoding', $use_charset);