Create spanish.php

European Spanish. [es_ES]

No literal translation: My method of translation involves analyzing the meaning and then express it in Spanish. Not contains automated/robot translations or sentences strange to read. I kept "Team" of ETS2MP Team untranslated (I consider it proper name, also in Spanish sounds awful).

- Corrected typo account.isnt.actiated > account.isnt.activated .

Greetings.
Salguero.