Hmm, we don't modularize to be able to run outsize Sugar. Running the activity in a browser also uses the libs.

Maybe better?

    The activity depends on libraries like [sugar-html-graphics](http://github.com/sugarlabs/sugar-html-graphics) and [sugar-html-core](http://github.com/sugarlabs/sugar-html-core) that adds the Sugar API and the Sugar look & feel.