using Genome Nexus hotspot data for oncoprint instead of OncoKB (fix https://github.com/cBioPortal/cbioportal/issues/3815)
using Genome Nexus hotspot data for oncoprint instead of OncoKB (fix https://github.com/cBioPortal/cbioportal/issues/3815)

Signed-off-by: Onur Sumer <s.onur.sumer@gmail.com>

Former-commit-id: 14796dcd51c68fdb9505f70debc4e44525520622
alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend