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'.
Clarify comment for Windows drag-and-drop mess
Further Windows drag-and-drop comment rewriting
Fix intermittent source file deletion when dragging files in on Windows

(at least, if this is caused by what I think it was caused by)

https://forums.zotero.org/discussion/38486/
Don't ignore initial punctuation when sorting
Also, change sorting sensitivity to "base"
Closes #514