If the timeshift mode is activated during playback, the title of the
program that was active when the time shift started is displayed by
pressing OK.
The behavior has now been changed so that the title of the program is
displayed in the actual playback position when you press OK.
When the timeshift recording reaches the end time of the start event,
the progress bar and the end time no longer shows any useful
information.
From this version the current live event is used to calculate the
progress bar and the end time.
With commit 8a04a17 an error was introduced which did not take the global
timers into account in the timeshift replay.
thanks to @machtnix at vdr-portal.de for finding the bug
