Since I replied directly to Vitaliy's post, he should get a notification without explicitly pinging him, but it can't hurt.
I have a small package that extracts built-in symbols and named characters automatically, yes. Getting symbols from a specific context like System` is easy. The named characters are extracted from here automatically. After that, everything is transformed so that I only have to replace it in the JavaScript files.
So if Wolfram doesn't change something fundamental, it is mostly automatic, yes.
