config.qfq.ini: Rename 'VAR_ADD_BY_SQL' to 'FILL_STORE_SYSTEM_BY_SQL_1'
- Rename 'VAR_ADD_BY_SQL' to 'FILL_STORE_SYSTEM_BY_SQL_1'
- Implement up to 3 independent to SQLs
- Optional error message, if not exact one record
- Columns in the Query, starting with an leading '_', should be renamed to 'without the leading "_"'.