MOO Wrapper Read-only replica DB deployed

There's now a replica DB used that's used for certain heavy read-only DB operations (top statistics, server_status, lists of user workunits/tasks etc) and should take a bit load off the main DB and by doing so, help the scheduler and other critical processes do their job. Please, do let me know if there's something that no longer seem to work. Thanks and happy crunching!

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Looks like this latest change has fubared stats exporting. Nothing being reported atm.