[Goodies-dev] panel edit panic button

[davegoodies at mytrashmail.com]

XFCE4.4RC1
right-click a panel icon to edit properties
make some change
now you're stuck, there is no "revert" or "cancel" option
whatever you did is not un-doable
XFCE4.4 needs a "cancel changes" button to exit edit-props cleanly