Merge pull request #102 from GordonSmith/Graph_Position

Graph Widget inside a Surface Widget Positioning is wrong.
Merge pull request #103 from GordonSmith/HIPIE_Graph

Add support for HIPIE Graphs
Demo/Test Page(s)

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Add CirclePacking Demo

Signed-off-by: Gordon Smith <gordonjsmith@gmail.com>
Add Graph Test Page

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>