[CDA-100] - Exporters using Kettle do not respect OutputIndexId

- Output index fixed for CSV and XLS exportations
- Unit Tests added
- Fixed sample-sql.cda used in CsvTest
- CheckStyle applied in changed files

@pamval Please review
This shouldn't be SqlDataAccess but DataAccess only. This interface is meant to be used with any DataAccess. 
Also, if you're using this just to get OutputIndexes, maybe you should have a method here that returns the output indexes and not the whole DataAccess.