site_upgrade Jul 04, 2012
Provides a means to close access to your site for upgrading and testing.
A button is placed in the Utility functions section of the Admin overview page to allow you to manage the state of your site. This button changes function depending on the state of the site. You may close a site, move a closed site to test mode, and then open the site.
Closing the site will cause links to the site front end to be redirected to a script in the folder plugins/site_upgrade. Access to the admin pages remains available. You should close the site while you are uploading a new Zenphoto release so that users will not catch the site in an unstable state.
After you have uploaded the new release and run setup, you place the site in test mode. In this mode only logged in Administrators can access the front end. You can then, as the administrator, view the site to be sure (...)