With Python officially unsupported upstream and vendors only providing important security fixes for it we need to migrate completely to Python3 ASAP.

The core code base is mostly ported in terms of the backends and facilities related to hosting general research data. We have basically ported the components related to hosting sensitive data as well, but it needs more testing to discover and fix any remaining issues.

We're testing and weeding out any remaining issues on development systems and will continue with production sites.
Any issues related to the basic research data and the original complete grid compute stack should be gradually tested and handled in the separate milestones for those parts specifically.