Update requirements file
Update requirements file

Django-formtools 2.0 is compatible with django 1.10
rolandgeider/wger,wger-project/wger,petervanderdoes/wger,wger-project/wger,petervanderdoes/wger,petervanderdoes/wger,rolandgeider/wger,rolandgeider/wger,petervanderdoes/wger,wger-project/wger,rolandgeider/wger,wger-project/wger