Rewrite the Graph visualization code

[cegme]

The current graph visualization code is broken.
Additionally, It uses arbor.js.
Lets explore the d3.js at http://d3js.org/ because this is the more popular package.
We need to make sure d3.js is dynamic and can respond to events such as clicks.

[cegme]

@supriyan To speed things up, I'll write the first version of this as soon as possible.
When we get you cpu up to speed you can take over,

[cegme]

Hey @supriyan, @virup and @clintpgeorge . Let me know if you get this up and running locally. If so, check out the graph visualization.
I put an example of what is capable: http://localhost/grisham/web/force-collapsible.html
Its just a start but I would like to know what you think.

Hey, I put the code up on neo server. Check out this link: http://neo.cise.ufl.edu/grisham/web/force-collapsible.html