solving c2 imports, forbidding free coaches access to imports

rowers/rower_rules.py

@@ -110,6 +110,10 @@ def is_staff(user): # pragma: no cover
 def is_coach(user):
     return user.rower.rowerplan in ['coach','freecoach']
 
+@rules.predicate
+def is_not_freecoach(user):
+    return user.rower.rowerplan != 'freecoach'
+
 def is_paid_coach(user):
     return user.rower.rowerplan == 'coach'
 
@@ -324,6 +328,7 @@ rules.add_perm('rower.add_plan',can_plan_user) # replaces checkaccessplanuser
 rules.add_perm('rower.is_coach',is_coach_user) # replaces checkaccessuser
 rules.add_perm('rower.is_pro',ispromember)
 rules.add_perm('rower.is_staff',is_staff)
+rules.add_perm('rower.is_not_freecoach',is_not_freecoach)
 
 # WORKOUT permissions