- Added functionality to save study plans and courses in SAM format to PostgreSQL.
- Updated SQL queries to reflect SAM-native column names and handle conflicts appropriately.
- Introduced new fields in the Asset model for English level and SAM identifiers.
- Enhanced the TestTemplateForm component to manage linked assets and shared materials.
- Created a new AdminSharedMaterialsPage for uploading ZIP files of shared materials.
- Added migrations to create SAM mirror tables and update the assets table with new columns.
