FIX: Transcoded/burned-in subtitles from PMS server selection

See commit diff for more info.
Also added a "Disabled" option for turning them off!
Tested as working against PMS 0.9.8.2
Merge pull request #65 from DonDavici/wezhunter

[Testing] FIX: Transcoded/burned-in subtitles from PMS server selection