Removed player-specific score controls.
Controls view for shared score control buttons.
Player score history implemented.
If score is higher than 50, reset to 25.
A player can win the game at 50 points.
No magic numbers
Score is given only when next turn is clicked.
Undo button rewinds players' turn by one.
Undo removes the last score from the player.
Disable the undo button if there are no actions to undo.
Next turn button is disabled until a score is selected.
Merge branch 'feature/score-controls' into develop

* feature/score-controls:
  Next turn button is disabled until a score is selected.
  Disable the undo button if there are no actions to undo.
  Undo removes the last score from the player.
  Undo button rewinds players' turn by one.
  Score is given only when next turn is clicked.
  No magic numbers
  A player can win the game at 50 points.
  If score is higher than 50, reset to 25.
  Player score history implemented.
  Controls view for shared score control buttons.
  Removed player-specific score controls.