Major update to Hella Fresh Express!

This one tackles several issues caused by some much needed user interface improvements.

• a timer has been added to the game level.
• The instructions have improved clarity.
• Fernando will now offer hints to the player when they make an error to help jog their memory. 
• GAME OVER is no longer issued immediately after going into the red, but rather at the end of the day.

I also refactored much of the code since its original jam version and reduced some of the file sizes for the graphics, so if I ever intend to update this again, it should go much smoother.

The Google Play version will be updated within the week, just sorting out some technical issues.