#2195 : Upgrading to Django2-style middleware
#2195 : Upgrading to Django2-style middleware

lino-framework/welfare,lsaffre/lino-welfare,lino-framework/welfare,lino-framework/welfare,lsaffre/lino-welfare,lino-framework/welfare,lsaffre/lino-welfare,lino-framework/welfare,lsaffre/lino-welfare,lsaffre/lino-welfare