* added "zoom level tile size" button in editor to toolbox (currently
no function behind it; will be used to zoom level editor playfield)
* added key shortcuts '1' to '3' to view properties of drawing elements
* added "zoom level tile size" button in editor to toolbox (currently
no function behind it; will be used to zoom level editor playfield)
* added key shortcuts '1' to '3' to view properties of drawing elements