* Refactor send404 function and set to uniformed format.

framework/api/entry.class.php

@@ -219,6 +219,17 @@ class baseEntry
         $this->send($code, $response);
     }
 
+    /**
+     * Send 404 response.
+     *
+     * @access public
+     * @return void
+     */
+    public function send404()
+    {
+        $this->sendError(404, '404 Not found');
+    }
+
     /**
      * 加载禅道的控制器类
      * Load controller of zentaopms