Dispatcher graph rewrite

[Tallyrald]

We have a rudimentary graph view for the EDR that is half-broken and overall not very usable. Unfortunately I'm not very knowledgeable with the technical side of drawing graphs in React (or with any library really).

It would be fantastic if someone was able to help rewrite and enhance the graph view. (This task is intended to be worked on after 2.0 realeases)