Make the VMsInLastUpdate column more useful, remove or replace #71

This column just totals the number of records loaded for a site that happened to be loaded within the same second as their latest record. Thus it doesn't give much useful information other than a crude measure of site activity.

A measure of records loaded in last 24 hours would be much more useful and would in theory relate to what a site is unloading (assuming they are doing it once a day).