PIVOT-946:  Undo part of the change to TerraVFSBrowserSkin:  Cannot reuse a GridPane.Filler
once it has been used in another context.  So, revert to the old code.


git-svn-id: https://svn.apache.org/repos/asf/pivot/trunk@1589012 13f79535-47bb-0310-9956-ffa450edef68