- Added filtering for cases based on start date in `sager_liste`.
- Improved fallback relation tree rendering in `sag_detaljer` when tree builder fails.
- Normalized relation types in `RelationService` for consistency.
- Updated relation type display in templates with new styles and improved semantics.
- Enhanced customer handling in detail view with edit functionality.
- Updated various labels for clarity in the UI.
- Added new buttons for deferred status shortcuts in the detail view.
- Improved tag picker resilience by decoupling from optional tag group API.