fixes in sitemap, site preference

app/models/site.rb

@@ -12,7 +12,7 @@ class Site
   field :private_key, :type => Binary
   field :public_key, :type => Binary
 
-  field :frontend_closed, :type => Boolean, :default => false
+  field :frontend_open, :type => Boolean, :default => true
   field :backend_openness_on, :type => Boolean, :default => false
   field :desktop_closed, :type => Boolean, :default => false
   field :sitemap_menu_in_header, :type => Boolean, :default => false