perf[avatar]:minimize the selected area of avatar on the mobile phone when user clicked avatar (#1304)

https://github.com/cssnano/cssnano/issues/643

* fix[tagsView]:fixed visited view move to currentTag

* edit the scroll regular friendly

* tweak

* 修复 Mock 导致请求丢失 Cookie 的问题

修复 Mock 导致 Cookie 丢失的问题，只有在 XHR.open() 周期时，自定义的 withCredentials 会被挂载，此时检查是否是未被拦截的 xhr，并挂载自定义的 withCredentials ，无则默认为 false

* 优化html模板

Some strange bugs occur when the names of the routes are the same.

Documentation: https://panjiachen.github.io/vue-element-admin-site/feature/component/excel.html

复用此组件时因为id不可重复的问题会导致onSuccess指向错误。

Fixed #1125