Add data migration to nullify scores

[fungjj92]

Overview

The schema of the underlying scores data changed, thus invalidating the cached apiary scores. By wiping the scores, we allow a user to pull fresh data on next login. Said data is not automatically pulled because of budget constraints.

Connects #525

Demo

Logged in with wiped data:

Testing Instructions

Pull down branch Try to login and see that the app breaks Apply the migration ./scripts/manage.sh migrate Refresh app and see the screenshot Pull data and see that it comes back successfully

[rajadain]

This is failing for me with the message "can't convert null to object"

Should we reset it to be {} instead?

[fungjj92]

Great! Phew ha.