Remove restart status message.
Remove description from null feature.
Implement detailed toString() for file blocks.

This includes toString() implementations for every dataset type that is
contained in a FileBlock.
Add method to wrap events in GalileoMessages.

This automates a few repetitive steps that were being duplicated everywhere.
Add detailed package-info for comm.
Update javadoc.

Remove unnecessary deserialization docstring and clarify that StorageEvent is
used internally.
Reorganize TextClient
Add StorageRequest message for use at clients.

This implements internal file storage routing.