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Minor update, to avoid re-registration of database when using `GwUsersWebManager <https://groundwork-users.readthedocs.io/en/latest/api.htmlgroundwork_users.plugins.GwUsersWebManager>`_ and `GwUsersPattern <https://groundwork-users.readthedocs.io/en/latest/api.htmlgroundwork_users.patterns.GwUsersPattern>`_ together and updated database models.
* modified database registration process