Add support for authentication

[jettro]

No that Shield is available, I need proper basic authentication support for this plugin. I will add the option to configure the username as password just like the url of the server.

[joe011]

yeah , I also need to

[jettro]

default authentication works, your browser should ask you for userid password combination. But having it as a configuration option would be nice.

[chrisdrobison]

@jettro If you try to get at ES from a hosted version of the GUI (not installed as a plugin), it doesn't work.