Check that cloud pipeline still works

[anebz]

• [x] Scrapinghub -> S3 -> local
• [x] Explore dvc, data version control for data and models

[anebz]

dvc is installed, and boulderdata.csv is now stored in an S3 bucket called bboulderdataset. Tutorial for this: https://dvc.org/doc/use-cases/sharing-data-and-model-files