add favicon

template/src/oj/index.html

@@ -6,6 +6,7 @@
     <title>青岛大学在线评测平台 - 首页</title>
 
     <link rel="stylesheet" type="text/css" href="/static/css/fullpage/jquery.fullPage.css">
+    <link rel="shortcut icon" href="/static/img/favicon.ico">
     <style>
         html, textarea, input, option, select, button {
             font: 1em "Helvetica Neue", Helvetica, "Lantinghei SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑",