Add above-fold filepage link to stats fields

Change-Id: I0c6418c8aae6f289ee4771a98779795e6f2043eb
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/726
Add original file clicks to the TSV data generation

The patch was done under the assumption that it will be deployed
in the same sprint as the parent, so there is no need to keep the
table for the revision which was never used in production.

Change-Id: I227e8dbf4ed93fa49892e1cfa21e0422ed0c70de
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/715
Collect data for opt-in/opt-out events

This assumes that the parent commit will be deployed in the same sprint,
so there is no point in keeping the table for that schema version.

Change-Id: I4ed5c6a18c6781be3e73e5ea44108b0874d39333
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/558