Fix bug on SubtitulosES service

There is a bug downloading subtitles in Catalan language, due to the length of the language code (English => 1 {1}, Spanish => 5 {1}, Catalan => 12 {2}).
Merge pull request #189 from dsoms/patch-2

Fix bug on SubtitulosES service
Fix problem after latest update of plugin
Merge pull request #190 from jded76/frodo

Fix problem after latest update of plugin
[fix] Subs4Free and SubtitlesGR service.
Merge pull request #192 from lambda81/frodo

[fix] Subs4Free and SubtitlesGR service.