An Ajax Plugin Helper for the WordPress admin plugin page. Adds Ajax activate, deactivate, delete and upgrade functionality.
In order for these links to show up WordPress has to determine if PHP can perform the necessary file system level tasks without prompting for FTP or SSH/SFTP login information. See Editing wp-config.php and Using SSH to Install/Upgrade for information on configuring WordPress to not prompt you for this information.
Using the Ajax Plugin Helper to perform the functions provided by the plugin would cause several things to break since it would become deactivated before it could perform all of its required functions. Because of this you will not have Ajax links added to the Ajax Plugin Helper plugin.
Yes. Just place it in
wp-content/plugins. Please note that it does not yet add an Ajax Activate Site Wide link yet. The Activate Site Wide links will just operate just as it did before.