Tvheadend

With latest changes in such subsystem (thanks Perexg!), there are some problems:
- the "Play" link in the "Finished Recordings" is broken for all rows: http://host:9981/play/dvrfile/undefined?title=undefined
- links to access to a json representation of the recordings status that worked in the past, now are dead: http://host:9981/{dvrlist_upcoming,dvrlist_finished,dvrlist_failed}. Maybe there were not official but, for sure, very useful for scripting. Changed URL? Removed??