handle required image in serializer when there's already an image
handle required image in serializer when there's already an image

onepercentclub/bluebottle,jfterpstra/bluebottle,jfterpstra/bluebottle,onepercentclub/bluebottle,jfterpstra/bluebottle,onepercentclub/bluebottle,onepercentclub/bluebottle,jfterpstra/bluebottle,onepercentclub/bluebottle