Return proper json attibutes, not JSONShelf. Also, add template to save response.

-Dx
Starting to build angular directives for particle management...

-Dx
Markup for directive for particle picker. Long way to go yet.

-Dx
Better column sizes on the header.

-Dx
Content menu, with headers
Without header
Empty content blocks now look 'correct.'

Next: Adding new Particles

-Dx