Rclone supports download Web GUI manually or full file with Web GUI

Feature
5

On windows. It works on directory ~\AppData\Local\rclone\webgui\current\build

i.e the file index.html in xxx.zip which download from https://github.com/rclone/rclone-webui-react/releases, should be path ~\AppData\Local\rclone\webgui\current\build\index.html.

Here is the situation.

$ ./rclone.exe rcd --rc-web-gui --rc-user admin --rc-pass admin
2020/11/18 09:11:18 NOTICE: Web GUI exists. Update skipped.
2020/11/18 09:11:18 NOTICE: Serving Web GUI
2020/11/18 09:11:18 NOTICE: Serving remote control on http://127.0.0.1:5572/

Rclone use cache file instead of download zip file.

Thanks.