update frontend version (include network.htm)
update frontend version (include network.htm)

Set to latest frontend release-1.15.0 such that network.htm is included (for enabling serving of network tab through iframe)
sheridancbio/cbioportal,onursumer/cbioportal,n1zea144/cbioportal,onursumer/cbioportal,angelicaochoa/cbioportal,angelicaochoa/cbioportal,pughlab/cbioportal,zhx828/cbioportal,cBioPortal/cbioportal,cBioPortal/cbioportal,onursumer/cbioportal,angelicaochoa/cbioportal,pughlab/cbioportal,d3b-center/pedcbioportal,sheridancbio/cbioportal,zhx828/cbioportal,mandawilson/cbioportal,angelicaochoa/cbioportal,sheridancbio/cbioportal,zhx828/cbioportal,mandawilson/cbioportal,pughlab/cbioportal,d3b-center/pedcbioportal,pughlab/cbioportal,cBioPortal/cbioportal,onursumer/cbioportal,d3b-center/pedcbioportal,n1zea144/cbioportal,sheridancbio/cbioportal,zhx828/cbioportal,d3b-center/pedcbioportal,zhx828/cbioportal,mandawilson/cbioportal,mandawilson/cbioportal,mandawilson/cbioportal,d3b-center/pedcbioportal,mandawilson/cbioportal,angelicaochoa/cbioportal,cBioPortal/cbioportal,sheridancbio/cbioportal,angelicaochoa/cbioportal,pughlab/cbioportal,pughlab/cbioportal,sheridancbio/cbioportal,d3b-center/pedcbioportal,d3b-center/pedcbioportal,pughlab/cbioportal,n1zea144/cbioportal,n1zea144/cbioportal,onursumer/cbioportal,cBioPortal/cbioportal,zhx828/cbioportal,angelicaochoa/cbioportal,onursumer/cbioportal,n1zea144/cbioportal,cBioPortal/cbioportal,mandawilson/cbioportal,n1zea144/cbioportal,n1zea144/cbioportal,zhx828/cbioportal