* Fix save story common bug.

module/custom/js/flow.js

@@ -1,6 +1,6 @@
 $(document).ready(function()
 { 
-    $('#mainMenu #conceptTab').addClass('btn-active-text');
+    $('#mainMenu #flowTab').addClass('btn-active-text');
     $('#ajaxForm').ajaxForm(
     {
         finish:function(response)

module/custom/model.php

@@ -538,7 +538,7 @@ class customModel extends model
      */
     public function setStoryRequirement()
     {
-        if(!$this->post->storyRequirement) return true;
+        if(!isset($_POST['storyRequirement'])) return true;
         $this->loadModel('setting')->setItem('system.custom.storyRequirement', $this->post->storyRequirement);
 
         $oldIndex = isset($this->config->custom->storyRequirement) ? $this->config->custom->storyRequirement : '0';