Kiosk mode #21

I'm thinking the "kiosk mode" should be Convos without any goto-anything and conversation list. It could however have the nick list, actions and "Convos logo" so you can see what's going on with the server connection.

I think it should be super minimalistic, suitable for being inside an iframe, embedded on another web page.

I don't think the user need to choose nick or any other settings. This is so the user can just "jump right in and chat". (Changing the nick however is OK, of course)

![idea-for-kiosk-mode](https://cloud.githubusercontent.com/assets/45729/4324855/7d0c657e-3f5e-11e4-830b-b23efd805ce2.png)
We should also have connection "username" which is a hash of the source IP, so the user is easier to ban. (@kraih's idea)