Stop adding some localization to ajax responses

plugins/vcard_attachments/vcard_attachments.php

@@ -21,7 +21,7 @@ class vcard_attachments extends rcube_plugin
 
         if ($rcmail->task == 'addressbook') {
             $skin_path = $this->local_skin_path();
-            $this->add_texts('localization', true);
+            $this->add_texts('localization', !$rcmail->output->ajax_call);
             $this->include_stylesheet($skin_path . '/style.css');
             $this->include_script('vcardattach.js');
             $this->add_button(
@@ -184,7 +184,7 @@ class vcard_attachments extends rcube_plugin
      */
     function save_vcard()
     {
-        $this->add_texts('localization', true);
+        $this->add_texts('localization');
 
         $uid     = rcube_utils::get_input_value('_uid', rcube_utils::INPUT_POST);
         $mbox    = rcube_utils::get_input_value('_mbox', rcube_utils::INPUT_POST);

program/steps/addressbook/func.inc

@@ -134,8 +134,11 @@ $RCMAIL->register_action_map(array(
 ));
 
 // Disable qr-code if php-gd or Endroid's QrCode is not installed
-$OUTPUT->set_env('qrcode', function_exists('imagecreate') && class_exists('Endroid\QrCode\QrCode'));
-$OUTPUT->add_label('qrcode');
+if (!$OUTPUT->ajax_call) {
+    $OUTPUT->set_env('qrcode', function_exists('imagecreate') && class_exists('Endroid\QrCode\QrCode'));
+    $OUTPUT->add_label('qrcode');
+}
+
 
 // instantiate a contacts object according to the given source
 function rcmail_contact_source($source=null, $init_env=false, $writable=false)