Greek services.

Hi Amet
Happy new year to you and your family.

I have an update for subtitles.gr service.
I have re-coded it from scratch, my previous code was a little messy.

I have also coded a new service for subs4free and subs4series.
It also downloads subtitles from subz.tv (subs4series redirects there).
These sites are the best greek subtitle sites right now.

http://www.subs4free.com/
http://www.subs4series.com/
http://www.subz.tv/

For subs4free service, I had to add script.module.mechanize in addon's requirements.
I have to use mechanize in order to download subtitles from there,
urllib, urllib2 won't work and believe me when a say that I really tried to use them instead.