hover option for accordion

[Anniepoo]

Hover doesn't work, the underlying jquery demo doesn't work either.

[wouterbeek]

The hover bug reads as follows (Firebug):

TypeError: jQuery.event.handle is undefined
jQuery.event.handle.apply( that, args );

[ahungry]

Fix is added here in this PR (needed to update the js code - works without all the \c\n at end of each line, not sure if that is needed for something, but it wasn't in necessary in emacs and doesn't change the render output in the browser DOM).

#19