Downgrade djangorestframework to 2.3.5
Add rest_framework to settings for testing purpose
CreateErrorInfo test

Moving tests to full django test client since we downgrade to rest_framework 2.3.5.
CreateDeviceInfo test
CreateUserSave test
Dummy property so we could pass ‘play’ field to the serializer
PlayLab test
FinishLab test
AnswerProblem test