* fix code error.

module/tutorial/control.php

@@ -37,7 +37,7 @@ class tutorial extends control
             $this->loadModel('setting')->setItem("$account.tutorial.tasks.setting", $setting);
             $this->send(array('result' => 'success'));
         }
-        $setting = $this->config->tutorial->tasks->setting;
+        $setting = isset($this->config->tutorial->tasks->setting) ? $this->config->tutorial->tasks->setting : '';
 
         if($this->viewType === 'json')
         {

module/tutorial/lang/zh-cn.php

@@ -25,7 +25,7 @@ $lang->tutorial->openTargetPage   = '打开 <strong class="task-page-name">目
 $lang->tutorial->atTargetPage     = '已在 <strong class="task-page-name">目标</strong> 页面';
 $lang->tutorial->reloadTargetPage = '重新载入';
 $lang->tutorial->target           = '目标';
-$lang->tutorial->tagetPageTip     = '按此指示打开【%s】页面';
+$lang->tutorial->targetPageTip    = '按此指示打开【%s】页面';
 $lang->tutorial->requiredTip      = '【%s】为必填项';
 $lang->tutorial->congratulateTask = '恭喜，你完成了任务 【<span class="task-name-current"></span>】！';
 $lang->tutorial->serverErrorTip   = '发生了一些错误。';

module/tutorial/view/index.html.php

@@ -106,8 +106,8 @@ $(function()
     var setting      = formatSetting('<?php echo $setting ?>');
     var lang         = 
     {
-        tagetPageTip: '<?php echo $lang->tutorial->tagetPageTip ?>',
-        target      : '<?php echo $lang->tutorial->taget ?>',
+        tagetPageTip: '<?php echo $lang->tutorial->targetPageTip ?>',
+        target      : '<?php echo $lang->tutorial->target ?>',
         requiredTip : '<?php echo $lang->tutorial->requiredTip ?>'
     }