Function scanPlugins

Scans a given plugin directory and places the found plugins into the array $cfg['plugins'].

Result: $cfg['plugins']['frontendusers'] => array with all found plugins

Note: Plugins are only "found" if the following directory structure if found:

entity/ plugin1/plugin1.php plugin2/plugin2.php

The plugin's directory and file name have to be the same, otherwise the function won't find them!

Package: Core\Backend
Copyright: four for business AG <www.4fb.de>
License: http://www.contenido.org/license/LIZENZ.txt
Author: Jan Lengowski
Located at includes/functions.general.php

Parameters summary
`string`	`$entity`	Name of the directory to scan

Thrown exceptions summary
`cDbException`
`cException`
`cInvalidArgumentException`