First Pass at Plugins Toolbox

@jdhenke @jhelbert 
Per our discussion, I played around a bit with the best way to show these different plugins. Currently, they are implemented as collapsible views in a main plugin box. 
I messed around with the colors a bit, just for fun. The actual look and feel is definitely open to discussion.

Things to do / look into:
* Node Profiles are not displaying
* Be able to reorder plugins
* Be able to toggle visibility of entire plugins box
* Where should the title go?

Thoughts?