Update server.py to handle browser cache (anticipation of Python 3.7)
Update server.py to handle browser cache (anticipation of Python 3.7)

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