Align Python Chart library with Odyssey Hackathon UI

[mortonanalytics]

For @mzargham to perform subgraph review, the Python chart library needs to better align with the Odyssey Hackathon UI. From what I can see so far:

1. Force simulation needs to scale to subgraph data sizes (100 or less nodes); DONE
2. Add halo as a click event on the node DONE
3. Add labels (conditional on size, maybe on hover...)
4. Fix popover to display node data (maybe merge with #3)

I'm assigning this to myself, but help is welcomed!

[teamdandelion]

I've been working on porting the Odyssey UI into sourcecred/sourcecred. You can see the work in progress here and you can give it a live run by cloning that branch, running yarn start, and going to localhost:8080/odyssey-graphviz/

It's in a pretty good shape, in that it has tooltips and the basic functionality, and is in a pretty cleanly architected React-like approach. I'm hoping to merge it into the codebase proper before long.

[mortonanalytics]

Awesome! I'll work from there rather than the hackathon code. Thanks!