Merge pull request #110 from GordonSmith/PersistLayout

Default to ForceDirected2 layout.
Add the ability to turn on and off the highlighr on mouse over feature.

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Demo/Test Page(s)

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge remote-tracking branch 'remotes/origin/OptionalGraphHighlight' into gh-pages