v6.4.4

[dippindots]

🐛 Bug Fixes

• Use VirtualStudy service from public VS controller by @forus in Use VirtualStudy service from public VS controller #11891

🎨 Style Tweaks

• add survey banner by @inodb in add survey banner cbioportal-frontend#5311

🧰 Maintenance

• Update tomcat dependency by @gblaih in Update tomcat dependency #11868

Full Changelog: v6.4.3...v6.4.4

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This discussion was created from the release v6.4.4.