Minor cleanings in py2js.js
Minor cleanings in py2js.js

brython-dev/brython,jonathanverner/brython,jonathanverner/brython,jonathanverner/brython,Hasimir/brython,Hasimir/brython,Hasimir/brython,brython-dev/brython,brython-dev/brython,jonathanverner/brython,kikocorreoso/brython,kikocorreoso/brython,kikocorreoso/brython,Hasimir/brython