Hook up the manager, fetcher, worker and consumer to begin processing
messages again.
Improve logging and debugging

Provide a clearer picture of which class is doing what in the log
output.
WIP
Fixup names and method references
removing #validate

no longer needed
Fix broken references in error handling
Fix issue with message attributes being stripped out
Support config in the application subclass and overrides per environment
Expand logger access
Allow environment configs to run before logger initialized
Move requires back to where they were in emque

When possible change fewer things about the application initialization,
to leverage previous testing of services.