Remove TableFactory because unused
Make loader not use deprecated MutableVerticalTable
Deprecate terrible constructor
Remove TableGenerator
Main is based on FixedLengthVector again.

Accidentally, it was based on a ConcurrentFixedLengthVector.
This fixes #337.
Clean up usage of Table::Table constructors and remove AttributeVectorFactory
(Re)move locks in Store
Remove GroupCommitter debug logging to stdout
Remove unused VolatileAttributeVector.h
Merge pull request #342 from bastih/master

Cleanups