v1.15.1

Oncoprint fixes/enhancements:

• show gene name in tooltip of merged track (cBioPortal/cbioportal#4493)
• Fix NaN% in clinical attribute selector (cBioPortal/cbioportal#4599)
• Only show clinical legend for altered cases (cBioPortal/cbioportal#4515)
• fix clinical data availability (#1381)
• fix cosmic count (#1384)

Other fixes:

• Fix PDF download (#1371)
• Add OQL banner to tabs that reflect OQL as well (cBioPortal/cbioportal#4595)
• fix PDF survival chart (#1375)
• Move legend to top in plots tab (#1369)
• plots tab filter out N/A data (#1380)
• allow to save png with background (#1382)
• toggle OQL filtering in mutations tab (#1385)
• on mutation mapper tool, only show mutations for the transcript being displayed (#1372)
• CNA and putative driver coloring in expression tab (#1377)