Adding database structure for scorecards.
Updating scorecard db schema.
Adding util for saving performances.
Adding utils to save a scorecard.
Saving Scorecards.
Merge pull request #9 from xaevinx/feature/save_scorecards

Initial Scorecard Saving
Fixing bug that caused the wrong players to be pulled from the database when reconstructing saved scorecards.
Fixing bug that failed to set scores when loading scorecards from the database.
Adding initial display of past scorecards.
Adding initial resuming of scorecards.
Fixing bug that created new scorecard entries instead of updating existing ones.
Fixing bug that failed to load scores correctly when editting a scorecard.
Updating performances on existing scorecards.
Fixing display for past scorecards.
Merge pull request #10 from xaevinx/feature/save_scorecards

Save and Load Scorecards