Add ASSET/UI folder with the first draft of the login UI
Adding Server.as and its events ServerEvent.as.
Encapsulate the SmartFox Server and simplify connection/login/room change etc.
For now the Smartfox server is accessible directly but it wont in the future
Add the UI/Login.as "controler"
It access directly the SmartFox Server via Server.getInstance().sfServer but it shouldn't
Will be fixed in the next commit
Test connection and login UI