moved one more basic rule check to rules

rowers/rower_rules.py

@@ -83,6 +83,10 @@ def user_is_not_basic(user):
 
     return False
 
+@rules.predicate
+def user_is_basic(user):
+    return not user_is_not_basic(user)
+
 @rules.predicate
 def can_start_trial(user):
     if user.is_anonymous: