CORE-6039 aliased validators in controllers
CORE-6039 removed dead dependency
CORE-6039 decoupled fileio namespaces from icat namespace
CORE-6039 upload file logic relies on message bus for file det

To decouple, fileio from filesystem, the fileio logic for file type detection was removed.  Instead, the filesystem will listen form file add messages on the message bus.
CORE-6039 decoupled fileio from filesystem.stat