Graph drawing: Arrows on directed edges go into nodes

[cashaffer]

Any edge in a graph that shows an arrow will draw that arrow so that it sticks into the circle that represents the target node by a couple of pixels. I think this would look nicer if the arrow head went right up to the border of the circle, but not through and into the circle.

[vkaravir]

This was due to the way Raphael adds the arrows to the lines. They are added after the line, so they go into the node. I adjusted the edges now in JSAV and this should be fixed (or at least significantly improved).

[vkaravir]

Oh, and this should fix the same problem in Lists using wider stroke on the lines.