Add reCAPTCHA scripts when required

inc/headerAdmin.inc.php

@@ -144,6 +144,11 @@ $modsForHesk_settings = mfh_getSettings();
         <?php
     }
 
+    // Use ReCaptcha API v2?
+    if (defined('RECAPTCHA')) {
+        echo '<script src="https://www.google.com/recaptcha/api.js?hl=' . $hesklang['RECAPTCHA'] . '" async defer></script>';
+    }
+
     if (defined('VALIDATOR')) {
         ?>
         <script type="text/javascript" src="<?php echo HESK_PATH; ?>js/validation-scripts.js"></script>