v1.12.0

Frontend:

• The sixth phase of the cBioPortal architectural upgrade is now complete: The Download tab has been moved to the new architecture.
• Added an option to download an SVG file on the Cancer Type Summary tab
• Cancer hotspots / 3d hotspots info now comes from genome nexus on mutations tab and patient view

Backend:

• Authorization fixes should make any portal using authorization significantly faster on study and results view