调整生产环境加载配置文件，保证每次刷新不被缓存

index.html

  <title>人人快速开发平台</title>
  <% if (process.env.NODE_ENV === 'production') { %>
    <!-- 生产环境 -->
    <script src="./config/index.js?h=<%=compilation.hash%>"></script>
    <script>document.write('<script src="./config/index.js?t=' + new Date().getTime() + '"><\/script>');</script>
  <% }else { %>
    <!-- 开发环境 -->
    <link rel="shortcut icon" type="image/x-icon" href="./static/img/favicon.ico">