Added logic to update game score. Added test cases for game score and
swing value reset.
Fixed round score update logic and unit tests
Fixed round score update logic for draws and unit tests
Added ability to save game score to database from BMInterface
Fixed test cases to pass
Removed mock code using mock caching
Removed BMGame->save_to_database because this functionality is covered completely by BMInterface
Fixed game selection bug in overview.html
Merge pull request #58 from blackshadowshade/end_of_round

End of round logic