confirm deleting from hotlist

[Oswald Buddenhagen <ossi kde org>]

moin,

it happens quite often that i accidentally delete items from the hotlist
- take the wrong angle when blindly moving up from the cursor block, and
you hit del instead of enter.
i think it would make sense if the hotlist obeyed the "confirm delete"
option as well.
alternatively, don't make del the delete action (but use f8 instead),
but i think this sucks more.

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