Relax language fallback to allow things like "/en"
Relax language fallback to allow things like "/en"

pycontw/pycontw2016,pycontw/pycontw2016,uranusjr/pycontw2016,pycontw/pycontw2016,uranusjr/pycontw2016,pycontw/pycontw2016,uranusjr/pycontw2016,uranusjr/pycontw2016