Duplicate data was being loaded into Graph.
Edges ID need to be unique, but consistent.

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Add more attributes to persist layer.

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

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