Added serialversionUID field
Fixed imports and added suppresswarnings, because the methods being called had undocumented side effects which could affect test outcome.
Removed prompt for number of players, which is no longer used.
Fixed tests here to work using new login methods. They don't pass because it appears someone modifying the Login component broke backwards compatability.
Merge branch 'dev' of github.com:CSc436/Project-4x into dev