work in progress, add fidelity to category group permissions (full, create posts, readonly)

app/models/topic_tracking_state.rb

@@ -113,11 +113,11 @@ class TopicTrackingState
           ((#{unread}) OR (#{new})) AND
           (topics.visible OR u.admin OR u.moderator) AND
           topics.deleted_at IS NULL AND
-          ( category_id IS NULL OR NOT c.secure OR category_id IN (
+          ( category_id IS NULL OR NOT c.read_restricted OR category_id IN (
               SELECT c2.id FROM categories c2
               JOIN category_groups cg ON cg.category_id = c2.id
               JOIN group_users gu ON gu.user_id = u.id AND cg.group_id = gu.group_id
-              WHERE c2.secure )
+              WHERE c2.read_restricted )
           )
 
 SQL