Update the isotropic game scraper to leverage the new approach

[mikemccllstr]

The scraper script should now:

1. Retrieve the day's archive from isotropic
2. Store a verbatim copy in the S3 bucket
3. Create a Celery task instance to repackage it

The Celery task should:

1. Retrieve the file from S3
2. Decompress it
3. Recompress each game, individually
4. Insert the compressed game into MongoDB
5. Create a Celery task instance to parse and insert the game

[mikemccllstr]

Appears to be functioning as of 91f2b4460.