* [uitest] Add the xpath of the save button.

module/task/test/ui/page/create.php

@@ -5,6 +5,7 @@ class createPage extends page
     {
         parent::__construct($webdriver);
         $xpath = array(
+            'savebtn'  => "//*[@id='form-task-create']/div[27]/button[1]",
         );
         $this->dom->xpath = array_merge($this->dom->xpath, $xpath);
     }