added registration form

rowers/plannedsessions.py

@@ -612,6 +612,13 @@ def add_rower_race(r,race):
 def remove_rower_race(r,race):
     race.rower.remove(r)
 
+    records = VirtualRaceResult.objects.filter(user=r,
+                                               workout__isnull=True,
+                                               race=race)
+
+    for r in records:
+        r.delete()
+
     return 1
 
 # Low Level functions - to be called by higher level methods