How to add applets to the Gnome classic panel in Ubuntu 12.04

By borfast

After getting Gnome classic back in Ubuntu 12.04 I was missing something crucial for my every-day use of Gnome: the ability to add/remove panel applets and program launchers.

Right-clicking on the panel doesn't bring up a menu like it used to - but there is a way to get it: super-key + alt + right-click (the "super-key" is also called the windows-key)
This is also how you move or remove items from the panel, by the way.

Now if only someone could explain to me why anyone on their right mind would do something like this, maybe I could stop thinking about punching the Gnome developers in the face... repeatedly...