update: 替换cdn，把cdn资源下载到本地

views/admin_classify.ejs

@@ -109,10 +109,11 @@
         </div>
     </div>
 </div>
-<link href="https://cdn.bootcss.com/element-ui/2.13.0/theme-chalk/index.css" rel="stylesheet">
+<link href="cdnjs/element/element.css" rel="stylesheet">
 <!-- 引入组件库 -->
-<script src="https://cdn.jsdelivr.net/npm/vue"></script>
+<script src="cdnjs/element/vue.min.js"></script>
-<script src="https://cdn.bootcss.com/element-ui/2.13.0/index.js"></script>
+<script src="cdnjs/element/element-ui.min.js"></script>
+
 <% include problem_table %>
 <script>
   new window.Vue({

views/header.ejs

@@ -33,10 +33,10 @@
       <link href="<%- this.builtInCdnUrl %>/google-fonts/exo-2.css" rel="stylesheet">
     <% } %>
     <script src="<%- lib('jquery/3.3.1/jquery.min.js') %>"></script>
-    <link href="https://cdn.bootcss.com/element-ui/2.13.0/theme-chalk/index.css" rel="stylesheet">
+    <link href="cdnjs/element/element.css" rel="stylesheet">
     <!-- 引入组件库 -->
-    <script src="https://cdn.jsdelivr.net/npm/vue"></script>
+    <script src="cdnjs/element/vue.min.js"></script>
-    <script src="https://cdn.bootcss.com/element-ui/2.13.0/index.js"></script>
+    <script src="cdnjs/element/element-ui.min.js"></script>
     <% if (syzoj.config.google_analytics && syzoj.config.google_analytics !== 'UA-XXXXXXXX-X') { %>
     <script>
       (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){