Separates logger for ingesting, so it doesn't get combined with output from other stuff like deprecation warnings, active_fedora, etc.
Merge branch 'development' into remove-excessive-logging-from-ingest-629
Changes ingester to use self-contained logger instead of Rails.logger. Closes #629.
Merge pull request #640 from afred/remove-excessive-logging-from-ingest-629

Seems reasonable, though I haven't run it.