[mythtv-cmyth] Release v1.9.14

This updates the MythTV PVR addon to v1.9.14.

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Changelog:
- Added demuxer (optional)
     - Improved timeshifting (GetPlayingTime, GetBufferStart/EndTime)
     - Faster channel switching
- Added possibility to start backend using Wake-on-LAN
- Added client actions
     - Toogle visibility of recordings that are in state 'Not recording'
     - Create special recording rules (series recording)
- Fixed compatibility with MythTV 0.27 backend
     - Fixed channel icon download
     - Fixed schedule management
- Fixed recognizing merged channels