small fix for study edit view lab queryset - make sure current lab is *always* one of the options, even if user can change lab (e.g. because superuser) but isn't in this lab
small fix for study edit view lab queryset - make sure current lab is *always* one of the options, even if user can change lab (e.g. because superuser) but isn't in this lab

CenterForOpenScience/lookit-api,CenterForOpenScience/lookit-api,CenterForOpenScience/lookit-api