Refactoring processing into multiple actors
DataSetCollectionProcessor is now a typed actor

And so the whole processing pipeline is actor-based
Fixes for client code of Processor
Commenting in accidentally commented out change
More CPU
Fixing bug: schema versions were incorrectly saved
Making CPUs for processing configurable
Using correct logger in Indexing service
Introducing throttling to avoid too many records being loaded into memory for large collections
Merge pull request #771 from delving/13.01-parallel-processing

13.01 parallel processing