Executed go fmt

getEngine() not handles DB parameters (#2972) (#2974)

Uses .AllCols() for Update in updateMirror()

Spanish traslation removed

Fixed a wrong way to ommit the --prune option in process.ExecDir() for MirrorUpdate function

As you included Czech translation to official distribution, I think I'm missing here.
I know, selfish as hell... ;)

Use hand-written SQL to do complex query

- Remove unused config settings `[picture] service`

- Update locales

- conf/locale: add mew translator profile