panel add items dialog button text

[Jasper Huijsmans]

Brian J. Tarricone schreef:
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> Hey Jasper,
> 
> The Add Items" dialog box has "Cancel" and "Add" buttons.  Cancel
> doesn't really make sense here, since you can add an item by
> double-clicking or dragging, but then clicking cancel doesn't (and
> shouldn't undo the action).  I suggest "Close" instead.  Patch attached.
> 

Hehe, I changed that back and forth about twenty times, I think. Anyway, 
  using close does make more sense, I agree.

	Jasper