Improve layout of the "Type Diagram" when there are a lot of types

[sanjiva]

Description:
The current layout results in a thing long view:

Describe your solution(s)
A better approach could be to do a bin packing style layout where you layout each independent thing in a box and keep laying them out horizontally as much as possible and then go below the largest of those and do the next "row". If the screen width changes then you lay it out again.

[sanjiva]

Related types have to be laid out in a single box for this algorithm to work. If everything is connected to everything else then its the degenerate case and its going to be ugly no matter what.