training menu "walkthroughs menu"

new "walkthroughs menu" available from the training menu.

the walkthroughs menu has several buttons which change the text in the scrollview, with each text containing a written step by step description of how to do one of the basic abstract functions of the game.

fix: spin-space mini-orders bubble moves from spin-space to fixed-space once mini-order is programmed, meaning that once the drum is spinning again the bubble does not follow the player-set bubble position relative to spin-space.