MP1-4155: defined RTSP commands
changed behavior after bad RTSP PLAY response
changed sending RTSP GET_PARAMETER request only in case of successful RTSP PLAY request
session ID is no longer mandatory
fixed timeout behavior in case of failed initiating RTSP communication
Merge remote-tracking branch 'remotes/upstream/MP1-4155-FEAT-Merge_of_IPTV_filter_and_MediaPortal_Url_Source_Splitter' into 1.6.0Fork-BDJ