add R-WIN key into "key chooser" list

[wju]

please add R-WIN key into "key chooser" list
or elsewhere, so one can use this key, when not at the keyboard


PS: for all who is also lacking this key, a provisional solution, provided by Pfeil, is here:
https://forum.voiceattack.com/smf/index.php?topic=2762.0


EDIT by Pfeil: Like the other modifier keys, the Windows (Win) key is represented as a button on the keypress action dialog; This button (and the other modifier buttons) can now be clicked to set it to either the left or right windows key.