usage-data: populate fields with data previously available on dot-com

Created by: coury-clark

If we compare the fields from the dot-com event stream and from the persisted event_logs table there is a number of fields that are not available in the event_logs table.

FirstSourceURL
LastSourceURL
FeatureFlags (exists but not populated)
CohortID (exists but not populated)
Referrer 
DeviceID
InsertID