Summer Pool updates to the Google Drive permissions changing scripts.

Update permissions on the "default" drive that holds all applicant folders (being used to deal with open applications). (#17)

Remove 105s delay between batch requests. (#19 (closed))

Limit batch requests to 100 operations. (#19 (closed))

Query existing drive permissions using batch requests, and remove duplicate requests to improve efficiency. (#19 (closed))

Use the "next" token returned from requests for drive permissions to recursively fetch permissions until all have been received. (#20 (closed))

Increase the details logged about the operations being performed (or that would have been performed, for a dry run).

Closes #17

Closes #19 (closed)

Closes #20 (closed)