js或css加上时间戳，降低缓存影响

{include file="public/_left"}
{include file="public/_header"}
<script src="__STATIC__/plugin/Calendar/js/laydate.js?t=<?php echo time(); ?>"></script>
<link rel="stylesheet" href="__STATIC__/plugin/Calendar/css/laydate.css?t=<?php echo time(); ?>"/>
<link rel="stylesheet" type="text/css" href="__STATIC__/css/index.css?t=<?php echo time(); ?>">