Adding few subtitle formats.

json, sami, smi and wsrt
Output the name of the subtitle.
svtplay: support for subtitle
tv4play: support for subtitle.
expressen: it works now again.
Adding support for TimedText subtitles
urplay: support for subtitles
kanal5play: support for subtitles
kanal5play: support for kanal9play.se
kanal5.se is now "closed"
viaplay: support for subtitles
New version.