Revert "when flipping between Tree and View tabs with edit on, clear out the containers for the toolbars before re-adding the toolbars -- this time in YUI"
... committeed too much stuff. ack

This reverts commit c19c3503d443ffd6ea5b1feb2cd8cfda5e2a1637.
when flipping between Tree and View tabs with edit on, clear out the containers for the toolbars before re-adding the toolbars -- this time in YUI -- and this time doing the same for the drag and drop bar