match proposal kind slugs with hyphens
match proposal kind slugs with hyphens

toulibre/symposion,faulteh/symposion,faulteh/symposion,pyohio/symposion,mbrochh/symposion,pydata/symposion,pyohio/symposion,euroscipy/symposion,TheOpenBastion/symposion,pinax/symposion,miurahr/symposion,euroscipy/symposion,TheOpenBastion/symposion,python-spain/symposion,pyconau2017/symposion,miurahr/symposion,pydata/symposion,toulibre/symposion,python-spain/symposion,mbrochh/symposion,pyconau2017/symposion,pinax/symposion