Add PeerExports() method for portal support. Also manager_urn() db slot access.  Delete ssh and ssl keys when deleting a user. Add BumpModified() to update usr_modified slot. Add DeleteSSHKeys() method.
Add PeerExports() method for portal support. Also manager_urn() db
slot access. 
Delete ssh and ssl keys when deleting a user.
Add BumpModified() to update usr_modified slot.
Add DeleteSSHKeys() method.

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