Full proxy mode

[nawa]

The Idea is to have one default ssh proxy and trying to pass all HTTP connections through it
Config will look like

app-port: 8080
mode: proxy-all
start-page: /proxy?10.1.1.1:8080

All URLs will look like http://localhost:8080/proxy?some-url-behind-ssh:1234/path/to/resource

As a result, you should rewrite all links on target HTML pages by adding http://localhost:8080/proxy? prefix