Use SSL for lobby connections

[Sheeo]

This is an issue with the current protocol, and the security implications here should be handled in the new-protocol branch.

[duk3luk3]

This issue is obsoleted by the move to API and ICE, right?

[micheljung]

The "lobby connection" is the one from client (not game) to server; it's where login messages are exchanged and the server tells the client which games/players are online. ICE affects game-game communication.

See also: https://github.com/FAForever/downlords-faf-client/wiki/Application-Design#connection-overview