Added capability to do Network Graphing. Still working on interactive graphs (moving, scaling, etc), and labeling of the edges and vertices.
Added interactive mouse scrolling and scaling to the network graph.
Added label transformer to display the name of the author / editor.
Added label transformer to show the number of documents on each edge.
Added code to keep track of the actual document numbers for the vertices and edges.
Moved graph and tracking code into its own class (NetworkGraphFrame)
Added network graphing functionality

Network graphing functionality to show relationships between document
authors and last editors