[Optimize] Add hash tag for js and css

[onewe]

It has many same problem recently. nacos-server is added a prefix nacos when add user from nacos-console. this bug is occurred by browser‘s cache that upgrade from 1.x to 2.x version.
最近出现了很多从低版本升级到高版本导致添加用户会多一个nacos前缀,归根结底是前端缓存造成的.

a simple plan:
提供一个优化方案:

1. js和css增加 hash tag(add hash tag for main.js and main.css)
2. index.html 禁止缓存(index.html mustn't be cached)