[pvr.tvh] remove some unused and rarely used methods
[pvr.tvh] lock the correct mutex in GetRecordingEdl()
[pvr.tvh] a getDvrCutpoints response without a cutpoint list is not malformed,
it just means there are no cutpoints for that recording
[pvr.tvh] reduce lock scope in various places
[pvr.tvh] avoid duplicate locking
[pvr.tvh] add missing lock
[pvr.tvh] fix confusion when logging retrieved recordings
Merge pull request #45 from Jalle19/minor-fixes

Bunch of minor fixes and improvements