Fixes: #2624 ogroup should use simplePlugin (only the class_config.inc part)
Fixes: #2747 the fusiondirectory-setup --install-plugins doesnt install the files contained in the include dir of the plugins
Fixes: #2748 we should remove from fusiondirectory-setup all the old code for systems, asterisk, mail
Fixes: #2749 the apache config provided by the core should not include the line of config for fusiondirectory.secrets