How to return icons to tray at 11.04

Probably, many already know that at 11.04 the design of the desktop was greatly altered. Also, many noticed that the system tray was missing in the top panel. That's just not everyone knows how to get it back. And this is done easily.

1. In the console type:
   

   gsettings set com.canonical.Unity.Panel systray-whitelist "['all']"
   

   
   
2. Relogin
3. We continue to live as before

And why did they pull up the entire tray and applets, if the applications for the replacement of the tray and nothing now.