Fix background download URL
Fix background download URL

rchekaluk/cloudbiolinux,elkingtonmcb/cloudbiolinux,pjotrp/cloudbiolinux,elkingtonmcb/cloudbiolinux,AICIDNN/cloudbiolinux,heuermh/cloudbiolinux,kdaily/cloudbiolinux,heuermh/cloudbiolinux,averagehat/cloudbiolinux,lpantano/cloudbiolinux,heuermh/cloudbiolinux,joemphilips/cloudbiolinux,kdaily/cloudbiolinux,lpantano/cloudbiolinux,averagehat/cloudbiolinux,rchekaluk/cloudbiolinux,joemphilips/cloudbiolinux,rchekaluk/cloudbiolinux,chapmanb/cloudbiolinux,AICIDNN/cloudbiolinux,kdaily/cloudbiolinux,joemphilips/cloudbiolinux,heuermh/cloudbiolinux,pjotrp/cloudbiolinux,chapmanb/cloudbiolinux,pjotrp/cloudbiolinux,elkingtonmcb/cloudbiolinux,chapmanb/cloudbiolinux,pjotrp/cloudbiolinux,AICIDNN/cloudbiolinux,averagehat/cloudbiolinux,AICIDNN/cloudbiolinux,kdaily/cloudbiolinux,elkingtonmcb/cloudbiolinux,rchekaluk/cloudbiolinux,chapmanb/cloudbiolinux,joemphilips/cloudbiolinux,averagehat/cloudbiolinux,lpantano/cloudbiolinux