add profile and timestamp to data export

[AstridKery]

This change adds the profile and timestamp to the exports.

This should be very simple for new projects, but for existing ones, we'll need to think of a workaround. One option is to change the export table name and re-export all items.

Another would be to add the Profile and Timestamp columns manually and then just have it add those fields for the newly labeled items. Unless this MR should append the columns if they are not there?