2SPOOKY

Add a special always run event for Halloween where the entire crew bursts into skeletons after a short while.

This has no real effect on anything besides the fact that skeletons can use the rarely touched xylophone var.
Adds a pair of usr checks for corgis so events can place things on their head without incurring a runtime (the chrismas event also does this)

<img src="http://images3.wikia.nocookie.net/__cb20130613172749/villains/images/5/59/Dancing_skeleton.gif" />