web: user type field (puavoEduPersonAffiliation) with multiple values
web: User model don't fix value of puavoEduPersonAffiliation (a7e9000a496802836fc06bcf22c7b188a0c747a2). Convert value (eg. Teacher -> teacher) of puavoEduPersonAffiliation on the ImportController when create new users by csv data.
web: fix tests