Firefox new policy on WebSocket do not allows listen-to-wikipedia to work + hotfix

Hi,

I'm not sure and I haven't reviewed policy changes in newer Firefox versions, but as it seems, Firefox (at least) do not allows to call plain WebSocket form HTTPS.

It's good to move to HTTPS to fix it.

But for users, you can change `network.websocket.allowInsecureFromHTTPS` in Firefox `about:config` to `true` to allow listen-to-wikipedia to work if you are addicted ;)
