Black box: the queries of the user's train worked out once a read, lights as the driver checks them

- The stations, the signals passed, the horn points, the couplings, the
  consists and the timetable progress of the user's train are kept until
  a read adds something; the views asked for them every frame, which on
  a long session with many trains took the window down. A read that adds
  nothing no longer counts as a change.
- The lights are checked against the lamps the vehicles at the ends have
  (written by the simulator from now on), as its driver checks them: Pc 1
  without the upper headlight, with the auxiliary lamps, Pc 5 with the
  rear-end signals. Only while the user drives: the autopilot's lights
  are its own.
- A train off the platform counts at both ends: its head past the stop
  point as well as its tail before the platform's end.
- A recording without the couplings keeps the timetable for any vehicle
  of the user.
- A signal passed at danger is ringed on the map only once it was.
- In the tapes window a black box opens on a click or Enter, not when
  the arrow keys go over it.
- The viewer's screenshot of a window not laid out saves nothing and
  still closes.

Eu07.BlackBox.Views/MapView.cs

@@ -456,12 +456,14 @@ public sealed class MapView : Control
         var danger = new Pen(Palette.Over, 2.5);
         foreach (var passing in recording.UserPassings())
         {
+            if (passing.Time > _time)
+                continue;
             var p = ToScreen(passing.Position.X, passing.Position.Z);
             if (!Visible(p))
                 continue;
             if (passing.AtDanger)
                 context.DrawEllipse(null, danger, p, 10, 10);
-            else if (passing.Time <= _time)
+            else
                 context.DrawEllipse(null, passed, p, 7, 7);
         }
     }