Creates horizontal justification button

def _create_justification_button(self):
        """Creates horizontal justification button"""

        iconnames = ["JustifyLeft", "JustifyCenter", "JustifyRight"]
        bmplist = [icons[iconname] for iconname in iconnames]
        self.justify_tb = _widgets.BitmapToggleButton(self, bmplist)
        self.justify_tb.SetToolTipString(_(u"Justification"))
        self.Bind(wx.EVT_BUTTON, self.OnJustification, self.justify_tb)
        self.AddControl(self.justify_tb)