fix(config): 更新网站图标配置

- 将网站图标从 avatar.png 更改为 xj.ico
- 更新 init.js 中的图标路径配置
- 统一生产环境和开发环境的图标引用

index.html

@@ -10,7 +10,7 @@
   <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/avatar.png">
+  <link rel="shortcut icon" type="image/x-icon" href="./static/img/xj.ico">
   <script src="./static/config/index.js"></script>
   <script src="./static/plugins/mock-1.0.0-beta3/mock-min.js"></script>
   <script src="./static/plugins/echarts-3.8.5/echarts.common.min.js"></script>

static/config/init.js

@@ -3,7 +3,7 @@
  */
 ;(function() {
   var resList = {
-    icon: window.SITE_CONFIG.cdnUrl + '/static/img/favicon.ico',
+    icon: window.SITE_CONFIG.cdnUrl + '/static/img/xj.ico',
     css: [
       window.SITE_CONFIG.cdnUrl + '/static/css/app.css',
     ],