unifinished work - force label placement

[ivanov]

This will close #3, but I need input on how to proceed. So far, I've just gotten rid of the old rectangles that we had which would change color on hover, just so you can see what the label placement looks like.

should I bring back the boxes and still wrap text that's long, or leave it like this but make these labels highlight on mouseover like the boxes did?

Also, I've enable dragging, just so we can play around with it and see how the labels move around.

[ivanov]

You can see what it looks like here: http://pirsquared.org/networkdiagram/network-onefile.html

[irinaz]

I think that highlight on mouseover without boxes might work fine - I will have to ask customer (Jason :) ). Dragging looks very lovely - you are becoming total expert in d3 :))