Gradwatch Flushed

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Explanation of Gradwatch Flushed from Peter:

every day when GW synchs with the sybase data, the data that are not in sybase gets copied to the _flushed tables and then deleted from the main ones. a backup thing.

so the _flushed tables should only increase in size

but i think there are plenty of queries that look for records both in the main and the _flushed tables

so it sort of also keeps track of former applicants