Productionize debug visualization

These changes bring line-highlighting-while-running into the production code.   I've gone through and fixed a bunch of cases that we didn't get working in the hackathon.

The jquery-turtle.js changes are being reviewed elsewhere - so don't comment on jquery-turtle.js here - comment on that thread:
https://github.com/PencilCode/jquery-turtle/pull/37

For this thread, comment on editor* changes.