Tutorial — PSolTrix Steam update #956474

It turned out that new players still have problems understanding the geometries of PSolTrix, especially that the spheres consist of many rows/shells/layers. The update contains several changes that will, hopefully, give people a better understanding of what is going on: The different layers of the falling pieces/tetrominos are now rendered with a gap between them. I hope this will illustrate the different layers more clearly. There is also a slider in the menu to adjust the size of that gap. Adjustment of initial parameters for visualization of piece. If a piece is placed wrongly during the tutorial the camera will rotate more, to give players a better view of what went wrong. There is an extra step in the tutorial, showing an animation of the different layers. The transition from piece to tile-on-field is slowed down in the tutorial, to give players a better visualization of the relatio...