Lobby 2.5 fix

- Add Changelog dialog
- Remove temp debug message
- Remove temp change size chat
- Fix connection message
- Fix "CH" flag country
- Fix "VA" flag country
- Replace the "world" flag country
- Fix yellow country
- The ConnectDialog lasts until the lobby is fully loaded

Waiting before accept, contact me here.
You want the entire fa changelog in this?

Like I wrote elsewhere, I think we should approach this differently and put them on the web, approachable easily from the python lobby.