Panel plugin interface

[Jasper Huijsmans]

Maarten Boekhold wrote:
..
> 
> I must say that a redesign of the plugin interface seems like a good 
> idea. It's currently hard to track/control which functions/vars a plugin 
> is allowed to use.
> 

Hehe, yeah, this whole software design thing just kinda happened to me. 
This being my first non-trivial programming experience, I'm surprised it 
has worked as well as it did ;-)

	Jasper