Tutorial finger and end of level celebration

After getting feedback from a wide variety of people playing the game a lot of little changes have been made, among them:

- To make things as clear as possible in the tutorial a disembodied hand shows the player exactly where to tap and drag. This is so even if someone couldn't read the instructions there is a visual for showing how to play.

- I've also rearranged the levels and objectives. This included making a new level editor that can allow for more varied level goals.

- A new end of level celebration, all the balls disappear and give you points.

Of course all these changes should call for a leaderboard wipe, but that will come with the next update which should include a way to store much more levels and not have to manually make a new leaderboard for each one.