Change setting name to be more explicit

coin/billing/create_subscriptions_invoices.py

@@ -140,7 +140,7 @@ def create_member_invoice_for_a_period(member, date):
                 # à la facture
                 label = offer.name
                 try:
-                    if settings.ADD_COMMENTS_IN_BILLING and \
+                    if settings.INVOICES_INCLUDE_CONFIG_COMMENTS and \
                     (offer_subscription.configuration.comment):
                         label += " (%s)" % offer_subscription.configuration.comment
                 except ObjectDoesNotExist:

coin/settings_base.py

@@ -274,4 +274,4 @@ FEEDS = (
 MEMBER_CAN_EDIT_PROFILE = False
 
 # Add subscription comments in invoice items
-ADD_COMMENTS_IN_BILLING = True
+INVOICES_INCLUDE_CONFIG_COMMENTS = True