Restore highlighting of collection row during drag on Windows
Fix Quick Copy drag to Chrome textareas on Windows

Possibly to other places as well (but not Notepad, which doesn't work
from Firefox or Chrome either)

Unfortunately this requires going back to 'copy' cursor feedback when
dragging, even when Shift is used. We can only choose one on Windows (as
far as I can tell), and we were previously using the unadorned 'move'.