Bugfix for v3

This is a bugfix release for v3 branch.

• Fix possible UX error when sharing a folder with users
• Fix edge-cases on move from flat to structured datasource
• Fix incorrect root node handling in specific cases (deny on personal files)
• Fix regression to users with too many roles attached
• Add CELLS_BROKER_TRYPUB environment variable for high-load systems
• Backport SQL Meta Filtering from v4 branch for better performances

Change log

You can find a summary of the change log here.