correcting logic error (all workouts)

rowers/interactiveplots.py

@@ -1598,7 +1598,7 @@ def fitnessfit_chart(workouts,user,workoutmode='water',startdate=None,
             # create Fitness and Fatigue number
             fatigue = 0
             fitness = 0
-            previousworkouts = workouts.filter(date__lte=w.date)
+            previousworkouts = Workout.objects.filter(user=user.rower,date__lte=w.date)
             for ww in previousworkouts:
                 delta = (w.date-ww.date).days
                 weight = getattr(ww,metricchoice)