rnd-20040807-1-src

* fixed bug in gadget code which caused reset of CEs in level editor
  (example: pressing 'b' [grab brush] on CE config page erased values)
  (solution: check if gadgets in ClickOnGadget() are really mapped)
* fixed maze runner style CEs to use the configured move delay value
* added Aaron Davidson's tutorial level set to the "Tutorials" section