BLUEPRINT DCC model Release 0.3.0.1

* Attribute specimen_biobank is now specimen_biomaterial_provider
* Attribute specimen_biobank_id is now specimen_biomaterial_id
* Created controlled vocabulary SRALibraryStrategy, whose values are
  borrowed from SRA's LIBRARY_STRATEGY.
* Added library_strategy to all the Laboratory Experiments concepts
  depending on SRALibraryStrategy CV.
* platform attribute has been moved to each one of the concepts under
  Laboratory Experiments.
Added documentation of BLUEPRINT DCC 0.3.0.1