First interfaces almost done

The first interfaces (connect to server, login, create account, update) are almost done. Just need to add one more thing: The news bulletins from the server.

You now navigate in this way:

- Game connects to server
- Game checks for updates

When there's an update available, you can click a button to update SCF. The download screen now has a counter to indicate the ETA (seconds remaining), and the updater will remove the old version automatically when the new version gets launched. These are only small modifications, but the system looks better now (I also cleaned things up in the source code, making it easier to edit the system, if necessary).

After a connection with the server has been established, the login screen appears. The news bulletins will shown in this screen too. Besides that, most things look the same like before (switching between 'create account' and 'log in' etc.)

Anyway, that's it for today. I'm working on SCF as much as I can ;)