Edited validate_metdata to use version of bioontology instead of the most recent one.
Edited validate_metdata to use version of bioontology instead of the most recent one.

MG-RAST/pipeline,teharrison/pipeline,teharrison/pipeline,teharrison/pipeline,wgerlach/pipeline,MG-RAST/pipeline,wgerlach/pipeline,wgerlach/pipeline,MG-RAST/pipeline