tableview selection color should change when not the firstResponder

Since we don't yet have a focus ring, it has aways seemed odd that our tableview gives no visual feedback if they are the firstResponder or not, particularly if there are multiple tableviews in a single window. In cocoa when the tableview looses firstResponder or its window is not the keyWindow the selection color turns gray. Added a 2nd window and a couple of textfields to the DictionaryController Test to show the changes.