Data config confusion (need "name" for ddfbw instead of "dataset")

[angiehjort]

data config fields should be unified across readers and vizabi reactive

this doesn't work

__data = {
  "modelType": "ddfbw",
  "service": "https://big-waffle.gapminder.org",
  "dataset": "SG-develop",
};

this worked!

__data = {
  "modelType": "ddfbw",
  "service": "https://big-waffle.gapminder.org",
  "dataset": "SG-develop",
  "name": "SG-develop"
};

why "name"? "name" is meaningless from the point of view of config (should it be the name of the model?) and the reader (reader calls it a dataset, not name)