API: display proper error message when trying to view metagenomes still in pipeline
API: display proper error message when trying to view metagenomes still in pipeline

MG-RAST/MG-RAST,wilke/MG-RAST,teharrison/MG-RAST,teharrison/MG-RAST,MG-RAST/MG-RAST,wilke/MG-RAST,wilke/MG-RAST,paczian/MG-RAST,wilke/MG-RAST,paczian/MG-RAST,wilke/MG-RAST,teharrison/MG-RAST,teharrison/MG-RAST,paczian/MG-RAST,MG-RAST/MG-RAST,paczian/MG-RAST,paczian/MG-RAST,wilke/MG-RAST,MG-RAST/MG-RAST,MG-RAST/MG-RAST,paczian/MG-RAST,teharrison/MG-RAST,wilke/MG-RAST,teharrison/MG-RAST