Analysis tab should work on compressed vcfs and allow hg38 reference

The current analysis tab is currently almost unusable. It seems to only allow bam and vcf files, and it only has hg19 reference. The broad's main analysis pipeline is HG38, and produces compressed vcfs (.vcf.gz) and crams (.cram) on the next reference build (hg38) so all the output files are un-viewable in the in-browser IGV offered in the analysis tab.