fix per l'history back in chrome
fix per l'history back in chrome


Former-commit-id: 504d8f3706e7a6ede4a0d812232b8d951df68d3a
leriomaggio/pycon_site,PythonSanSebastian/epcon,matrixise/epcon,malemburg/epcon,EuroPython/epcon,PythonSanSebastian/epcon,EuroPython/epcon,matrixise/epcon,matrixise/epcon,barrachri/epcon,EuroPython/epcon,leriomaggio/pycon_site,malemburg/epcon,artcz/epcon,artcz/epcon,malemburg/epcon,barrachri/epcon,artcz/epcon,leriomaggio/pycon_site,malemburg/epcon,EuroPython/epcon,PythonSanSebastian/epcon,PythonSanSebastian/epcon,barrachri/epcon,barrachri/epcon,artcz/epcon,pythonitalia/pycon_site,pythonitalia/pycon_site,PythonSanSebastian/epcon,artcz/epcon,matrixise/epcon,barrachri/epcon,pythonitalia/pycon_site,pythonitalia/pycon_site,malemburg/epcon,barrachri/epcon,PythonSanSebastian/epcon,malemburg/epcon,leriomaggio/pycon_site,artcz/epcon,leriomaggio/pycon_site,pythonitalia/pycon_site,matrixise/epcon,matrixise/epcon