Added methods to retrieve data from arrays in sudoku row, column, and block format
Multiple updates

	* Adding grey/white coloring for better UX/appearance
	* Preserving grey/white values after rollover
	* implemented reset functionality in game
	* added evaluate and replay buttons

* added functionality to identify sudoku block
Error handling

	*Added tile placement conflict handling for sudoku board
	*Addedd css classes for error handling
	*Added media queires for dynamic resizing
Adding 'ok' state to prompt if there are no conflicts