api: added self url to pagination output
api: added self url to pagination output

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