enable more secure cookie stuff

--HG--
branch : 3.2.0-release

config/environments/production.rb

@@ -28,7 +28,7 @@
   # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx
 
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
-  # config.force_ssl = true
+  config.force_ssl = CONFIG['secure']
 
   # See everything in the log (default is :info)
   config.log_level = :warn