Support study_id:sample_id in Custom case selection box
Support study_id:sample_id in Custom case selection box

This solves #3620

pughlab/cbioportal,zhx828/cbioportal,inodb/cbioportal,mandawilson/cbioportal,sheridancbio/cbioportal,mandawilson/cbioportal,n1zea144/cbioportal,angelicaochoa/cbioportal,cBioPortal/cbioportal,sheridancbio/cbioportal,jjgao/cbioportal,mandawilson/cbioportal,onursumer/cbioportal,inodb/cbioportal,d3b-center/pedcbioportal,n1zea144/cbioportal,n1zea144/cbioportal,cBioPortal/cbioportal,pughlab/cbioportal,angelicaochoa/cbioportal,pughlab/cbioportal,mandawilson/cbioportal,cBioPortal/cbioportal,inodb/cbioportal,angelicaochoa/cbioportal,jjgao/cbioportal,cBioPortal/cbioportal,jjgao/cbioportal,d3b-center/pedcbioportal,jjgao/cbioportal,onursumer/cbioportal,onursumer/cbioportal,angelicaochoa/cbioportal,mandawilson/cbioportal,n1zea144/cbioportal,n1zea144/cbioportal,pughlab/cbioportal,inodb/cbioportal,mandawilson/cbioportal,onursumer/cbioportal,cBioPortal/cbioportal,d3b-center/pedcbioportal,zhx828/cbioportal,pughlab/cbioportal,pughlab/cbioportal,zhx828/cbioportal,zhx828/cbioportal,inodb/cbioportal,onursumer/cbioportal,sheridancbio/cbioportal,angelicaochoa/cbioportal,jjgao/cbioportal,angelicaochoa/cbioportal,sheridancbio/cbioportal,zhx828/cbioportal,zhx828/cbioportal,jjgao/cbioportal,onursumer/cbioportal,zhx828/cbioportal,pughlab/cbioportal,d3b-center/pedcbioportal,d3b-center/pedcbioportal,n1zea144/cbioportal,mandawilson/cbioportal,n1zea144/cbioportal,sheridancbio/cbioportal,inodb/cbioportal,sheridancbio/cbioportal,jjgao/cbioportal,d3b-center/pedcbioportal,d3b-center/pedcbioportal,cBioPortal/cbioportal,inodb/cbioportal,angelicaochoa/cbioportal