adding async option to NK import

rowers/c2stuff.py

@@ -902,7 +902,7 @@ def make_authorization_url(request):
     return HttpResponseRedirect(url)
 
 # Get workout from C2 ID
-def get_workout(user,c2id):
+def get_workout(user,c2id,do_async=False):
     r = Rower.objects.get(user=user)
     if (r.c2token == '') or (r.c2token is None):
         s = "Token doesn't exist. Need to authorize"