0.0.8K - WorldMap saving.

+ WorldMap save.
WorldMap may now save the positioning of all the Levels. !(Unhighlighted
CTRL+SHIFT+S)

+ If Level cannot load a file, it makes a new file, using a template.
(Properties may be renamed to an unused filename to make a new level.)
! (Need to add double-clicking an empty space to make a level.)

~ LevelProperties tileset pathname shortened.