Logic changes on LazyStrings.

Reads `sheets` array by locale. On this locale you can pass a sheet id or an array of ids if you want to create more than one sheet for a single locale.

Ex:
`'sheets' => array(
        'en' => 0,
        'es' => array(12212, 32323, 67657),
        'pt' => array(76867, 67867, 67867, 678678),
    )`
Update on LazyStrings test.

`getCopyCsv` returns an array directly.