Skin Update

- Skinning of DialogPVRChannelOSD with BOX look
- Skinning of DialogPVRGroupManager with BOX look
- Skinning of DialogPVRGuideInfo with BOX look
- Skinning of DialogPVRGuideOSD with BOX look
- Skinning of DialogPVRGuideSearch with BOX look
- Skinning of DialogPVRRecordingInfo with BOX look
- Skinning of DialogPVRTimerSettings with BOX look
- Updated DialogPVRChannelManager
- Updated Video OSD to display Live Tv Info
- Added OSD EPG button
- Bug Fixes