Add user message about cbioportal seminar (public and msk portal only)
Add user message about cbioportal seminar (public and msk portal only)


Former-commit-id: 5ddff371a5e85ccd56b46507a6fa780fa14aec23
alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,alisman/cbioportal-frontend,cBioPortal/cbioportal-frontend