Make graph_objs.py compatible with new graph reference!

- created from @theengineear 's factories branch
- adapt graph reference INFO to new graph reference structure
- add doc content (e.g. links to plot.ly examples and parent keys for a given obj)

yeah, let's change it, we should be consistent in the project, just like it would be consistent to *use* them in graph_ref stuff at this point. if we don't do it now, we never will :) i think there's another comment below on this somewhere too.