Related #1549 (closed). Link to the docs will be added in adminFE.
Due to recent changes (migrating only user defined settings) check on empty settings in DB can lead to confusing situation:
- user run migration to DB
- but no settings were migrated, because there were only
- user continues to receive error about migration
Closes #1547 (closed). Added new type for dropdown.
Related adminFE MR admin-fe!89 (merged)