The selection no longer lost or moved on folder opening/closing.
The erase functionality works, on Mac (Windows) use the delete (backspace) or forward delete (delete) keys.
unfortunately there are sometimes exceptions so I am not calling erase() on each item until we figure out what the problem is.
view._deleteItem() and view._insertItem() are now view._hideItem() and view._showItem() to better reflect functionality.
I also started implementing some of the localization. There is a lot to do still, and I am still learning a lot of the Firefox extension technologies (XUL, adv. Javascript, etc.) but things are going great.
