Automatically use 'foo' as password on test lobby server

[muellni]

One of the last annoying points in my ICE test beta client is that the user has to reenter the password when he switches back from beta to production client.
I suggest to make the client detect that the test lobby server is used and override the supplied password with foo.
This way we don't touch the stored password for production.

[Wesmania]

I'd love to work on this on top of #653. Changing login widget stuff around in what we have currently is a pain, and it'd take just a handful of lines to implement that on top of that PR (including not having the widget snoop around the client object).

[muellni]

Thank you, this would be a nice to have for public ICE test. I'll rebase my ICE branch, just ping me when ready :)

[muellni]

You're using config.is_beta() but I suggest to detect using the test server instead. config.is_beta() could also be true for production server clients I guess.

[Wesmania]

Am I supposed to do that by looking at the host string? is_beta() is indeed a misleading name, but it simply checks if the environment is development, and I think it's the authoritative thing in deciding if we're connecting to the test server.

[muellni]

Sorry, you're right, defaults['host'] = 'test.faforever.com' is not from my ICE branch.