Improve context menu of system tray icon

The system tray icon context menu (when you right-click on the system tray icon) is useless right now (with only two options: Restore and Exit).

There is a whole lot of potential here. Some options that can be added:

  1. Compose new mail
  2. Chat List -> (shows all online contacts, clicking on any one opens the chat window for that contact)
  3. Add new Calendar Entry

Basically helpful quick links that will help me avoid having to open the main application window just to click a certain button (like Compose or chat)