export COOA.CustomEvent, have cooa.dat.gui emit cooadebugguiinit.
bugfixes to cooa.dat.gui; emit cooadebugguishutdown event.
renamed updateModel to updateDisplay.
story.now can only contain strings and numbers.
added debug GUI support to cooa.autovisit.
a few naming changes in cooa.autovisit.js.
ids for pages in example are pageN instead of page-N.