perf chart and gms chart now use rankingpiece

rowers/dataprep.py

@@ -1104,10 +1104,15 @@ def workout_goldmedalstandard(workout):
 
 def check_marker(workout):
     r = workout.user
+    gmstandard,gmseconds = workout_goldmedalstandard(workout)
+    if gmseconds<60:
+        return None
+
     dd = arrow.get(workout.date).datetime-datetime.timedelta(days=r.kfit)
     ws = Workout.objects.filter(date__gte=dd,
                                 date__lte=workout.date,
                                 user=r,duplicate=False,
+                                workouttype__in=mytypes.rowtypes,
                                 ).order_by("date")
     ids = []
     gms = []