Go over menu items

Currently, the menus hold these items. The checked items need to work, unchecked items need to be removed.

• File
  • New...
  • Open...
  • Save
  • Save as...
  • Import...
  • Export...
  • Page Setup...
  • Print...
• Extras
  • Edit diagram (opens XML in text editor window)
    • Open in new window (doesn't work)
• Help
  • Help (shows llorem ipsum)

Edit, View, Arrange and Extras hold working menu items, so no work needs to be done there.