Downloads: configedit.php, configedit.backup.
This script installs a config function and command which only work if a BOLTadmin, and only on page action.config. The backup file contains the action page. This is to maximize security issues. Here is the content of the page:
To set it up, install the configedit plugin, and enable the plugin in site.config for the single page action.config. You will also want to set action.config view/write permissions to @admin only.
To use, go to action.config and either click an existing config file, or create a new one using the simple input box.
Please be aware of the security implications of this script (similar to the setup plugin) and use with care. Note also, that you may have permissions problems as well, if your server is not running suexec.php. And finally, should you edit config.php and submit an error --it could crash your entire site. If you make an error on another config page, it will crash the appropriate hierarchy, but you should at least be able to fix it as long as it is not in the action.config hierarchy.