Update documented dependency versions
Update documented dependency versions

The documentation listed that we support installing cBioPortal with Java 7 and
Tomcat 6, but this will no longer work; we've agreed to drop support for these
a while back.
onursumer/cbioportal,sheridancbio/cbioportal,n1zea144/cbioportal,cBioPortal/cbioportal,zhx828/cbioportal,angelicaochoa/cbioportal,n1zea144/cbioportal,zhx828/cbioportal,inodb/cbioportal,cBioPortal/cbioportal,zhx828/cbioportal,n1zea144/cbioportal,jjgao/cbioportal,sheridancbio/cbioportal,mandawilson/cbioportal,pughlab/cbioportal,inodb/cbioportal,onursumer/cbioportal,d3b-center/pedcbioportal,inodb/cbioportal,n1zea144/cbioportal,mandawilson/cbioportal,pughlab/cbioportal,onursumer/cbioportal,jjgao/cbioportal,cBioPortal/cbioportal,cBioPortal/cbioportal,angelicaochoa/cbioportal,sheridancbio/cbioportal,n1zea144/cbioportal,d3b-center/pedcbioportal,angelicaochoa/cbioportal,zhx828/cbioportal,angelicaochoa/cbioportal,pughlab/cbioportal,cBioPortal/cbioportal,mandawilson/cbioportal,mandawilson/cbioportal,d3b-center/pedcbioportal,d3b-center/pedcbioportal,inodb/cbioportal,jjgao/cbioportal,sheridancbio/cbioportal,mandawilson/cbioportal,d3b-center/pedcbioportal,pughlab/cbioportal,n1zea144/cbioportal,jjgao/cbioportal,pughlab/cbioportal,cBioPortal/cbioportal,sheridancbio/cbioportal,zhx828/cbioportal,n1zea144/cbioportal,zhx828/cbioportal,onursumer/cbioportal,d3b-center/pedcbioportal,inodb/cbioportal,onursumer/cbioportal,jjgao/cbioportal,mandawilson/cbioportal,mandawilson/cbioportal,sheridancbio/cbioportal,d3b-center/pedcbioportal,pughlab/cbioportal,jjgao/cbioportal,jjgao/cbioportal,zhx828/cbioportal,angelicaochoa/cbioportal,angelicaochoa/cbioportal,pughlab/cbioportal,onursumer/cbioportal,inodb/cbioportal,angelicaochoa/cbioportal,inodb/cbioportal