initial.rev6

-if addon startup, but dont open PanelUI and then unisntall addon, then
open PanelUI the popupshow listener was still attached and stuff would
get added, so unataching that now on shutdown, using unloaders technique
-i actually wasnt even removing it after first running it, so doing that
now as well
-for some reason when uninstall and then reinstall the boxObject height
is 0 on the elements, im guessing this is because if add element into
hidden panel, the height doesnt take affect until popupshowing, so
changed to addEventLIstener not just if PUIsync not avail but if PanelUI
not open