Fixes in Subtitulos.es plugin

I have made some changes in Subtitulos.es plugin to get it working again. All the changes are detailed in the commit message.

 Various fixes in subtitlos.es plugin

- Fixed bug in the search of the download links.
- Fixed the re used to compare tems and subteams.
- Added Galego in languages.
- Now Spanish (from Spain) and Spanish (from latin america) have been
  differntiated.
- Search "-l es" now look in both type of spanish languages