All Sites Columns for Multisite

The plugin is useful for the superadmin of a multisite installations. It adds sortable columns to the Sites admin table in Network administration page.
The new columns are the following fields of the database table ‘wp_blogs’:
– blog_id
– public
– archived
– mature
– spam
– deleted
– site_id
The superadmin can hide the unwanted Columns via the Screen Option panel.