Add backgroud dot matrix
Clean UI.
Make the player cyan
Removed old relativity stuff
Revert "Removed old relativity stuff"

This reverts commit d23251ad145f6640fa5986514d1da580f1078c3e.
Remove references to Lorentz in Actor
Remove ALL references to Lorentz from Actor
Remove Lorentz, as it is no longer used
Remove Util, it is never called