[ZDWB-105] Created a new SLF4J logging component.  This is intended to make it nicer to integrate Wildebeest into other projects where the logging framework in use may be something other than Log4J.
[ZDWB-104] Track ResourceId with database state tracking to support composite resources where one database instance is migrated by multiple separately maintained Wildebeest resources.  Also switched from Log4J to SLF4J.