Clinical timeline: Create split heirarchy for Diagnosis subtypes
Clinical timeline: Create split heirarchy for Diagnosis subtypes


Former-commit-id: 3e42e8c0471b2b1a47efad50397c0d4eb633d71e
alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend