[ppa-lang] new spanish translation

[Martin M. <ma...@bu...>]

Some fixes, and some words that didn't get translated before.

-- 
Porqué usar una base de datos relacional cualquiera,
si podés usar PostgreSQL?
-----------------------------------------------------------------
Martín Marqués                  |        mma...@un...
Programador, Administrador, DBA |       Centro de Telematica
                       Universidad Nacional
                            del Litoral
-----------------------------------------------------------------