code: def currentPlugin( self ):
          
          col    = self.uiWizardTABLE.currentColumn()
          row    = self.uiWizardTABLE.currentRow()
          item   = self.uiWizardTABLE.currentItem()
          widget = self.uiWizardTABLE.cellWidget(row, col)
          
          if ( not (widget and item and item.isSelected()) ):
              return None
              
          return widget.plugin()
docs: Returns the currently selected plugin.
          
          :return     <XWizardPlugin> || None