If the current program is paused (timeshift mode), a recording
is created with an "@" at the beginning. A skin can display
this mode differently than the normal playback of a recording.
This change also enables a different display mode for currently
active timer recordings.
In displayreplay the tokens recstart, playbacktime and timeshiftrest
added to display start time, actual playback time and the rest of
the actual recording in timeshiftmode.
