[OPENENGSB-1256] Updated manual index
[OPENENGSB-1256] Updated manual index

Signed-off-by: Alexander Pucher <f19f49993921c53b08e9dad3c35af404997692d8@alexpucher.com>

openengsb/openengsb,openengsb/openengsb,openengsb/openengsb,openengsb/openengsb,openengsb/openengsb,openengsb/openengsb