Add a convenience method so we don't have to ask listPresenter to set…

… the header title of a filtering list:

src/Spec2-CommonWidgets/SpFilteringListPresenter.class.st

@@ -123,6 +123,13 @@ SpFilteringListPresenter >> filterText [
 	^  self filterInputPresenter text
 ]
 
+{ #category : 'api' }
+SpFilteringListPresenter >> headerTitle: aString [ 
+	"Set the receiver's title to aString"
+
+	listPresenter headerTitle: aString
+]
+
 { #category : 'initialization' }
 SpFilteringListPresenter >> initializePresenters [