Cut/Copy menuItems are always enabled

[ar-vargas]

In "Edit" menu, "Cut" and "Copy" options are always enabled regardless if there is or not selected text in textarea.

In fact there's a TODO for that issue:

// TODO "cut" and "copy" should really only be enabled
    // if some text is currently selected
    JMenuItem cutItem = newJMenuItem(tr("Cut"), 'X');
    cutItem.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
          handleCut();
        }
      });
    menu.add(cutItem);

    JMenuItem copyItem = newJMenuItem(tr("Copy"), 'C');
    copyItem.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
          textarea.copy();
        }
      });
    menu.add(copyItem);

at processing.app.Editor (1372)

[cmaglie]

Fixed by #4790