[Etoys] Navigator flap undo button font fix

[karl]

This fixes a issue with the navigator undo button font.
You have to reinstall the flaps for change to take effect.

Karl
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'From OLPC2.0 of ''24 October 2006'' [latest update: #1172] on 7 January 2007 at 2:38 pm'!

!ProjectNavigationMorph methodsFor: 'as yet unclassified' stamp: 'kfr 1/7/2007 14:37'!
makeUpdatingButtonWithBalloonText: balloonString actionSelector: actionSymbol wordingSelector: wordingSymbol
	"Answer a button  whose target is the receiver (i.e. a ProjectNavigationMorph), who gets its wording by sending the wordingSelector to me.  The given string"

	| aButton |
	aButton _ UpdatingSimpleButtonMorph new.
	aButton
		target: self;
		borderColor: #raised;
		color: self colorForButtons;
		label: '-' font: nil;
		font: self fontForButtons;
		setBalloonText: balloonString translated;
		actionSelector: actionSymbol;
		wordingSelector: wordingSymbol.
	aButton step.
	^ aButton
	
	! !