Add DVR property

Change-Id: I797ccd477966d592cad5a23e287d1c4f0aece9dc
confcontroller: Add DVR property

Change-Id: Ibfda0b8af6e43ab285c9ca60e4d72fdcccf3be78
confcontroller: Provide maximum duration in queries when DVR is used

Change-Id: I8ea726f8680c37227e178b7df09adbc2ab602b33
confcontroller: Enable/Disable live-DVR capabilities

Change-Id: I3eee04876c44a4d0fc879fc303a8faa905a6553c
recordingprofile: Remove useless trailing comma

Change-Id: I38ef85844e01515b1247f204834c67f4d55836b9
confcontroller: Configure muxers only if live-DVR is not enabled

Change-Id: I4cda9fe31c9a76713634ad703e5f81e83fc98c2f