Prevented the creation of queues with more than 4 sublevels due to bug report 7697.
Prevented the creation of queues with more than 4 sublevels due to bug report 7697.

mbeijen/otrs-1,rudy500/otrs,brandonshults01/otrs,nilei/otrs,balazj/otrs,eliasp/otrs,brandonshults01/otrs,xhoy/otrs,rudy500/otrs,xhoy/otrs,eliasp/otrs,s7design/otrs,thorsteneckel/otrs,moritz/otrs,moritz/otrs,crythias/otrs,vlascoder/otrs,linearregression/otrs,rudy500/otrs,brandonshults01/otrs,MBRG/otrs,eliasp/otrs,muehlbauer/otrs,xhoy/otrs,nilei/otrs,linearregression/otrs,PortgasDAce/otrs,crythias/otrs,rudy500/otrs,moritz/otrs,vlascoder/otrs,muehlbauer/otrs,capeit-tto/otrs,muehlbauer/otrs,crythias/otrs,oiami/otrs,eliasp/otrs,balazj/otrs,MBRG/otrs,linearregression/otrs,StCyr/otrs,crythias/otrs,StCyr/otrs,StCyr/otrs,noritnk/otrs,thorsteneckel/otrs,eliasp/otrs,rudy500/otrs,oiami/otrs,mburggraf/otrs,noritnk/otrs,oiami/otrs,brandonshults01/otrs,PortgasDAce/otrs,PortgasDAce/otrs,capeit-tto/otrs,mburggraf/otrs,brandonshults01/otrs,MBRG/otrs,s7design/otrs,thorsteneckel/otrs,PortgasDAce/otrs,nilei/otrs,linearregression/otrs,s7design/otrs,oiami/otrs,balazj/otrs,MBRG/otrs,linearregression/otrs,s7design/otrs,PortgasDAce/otrs,moritz/otrs,s7design/otrs,nilei/otrs,muehlbauer/otrs,muehlbauer/otrs,mburggraf/otrs,noritnk/otrs,oiami/otrs,xhoy/otrs,vlascoder/otrs,mbeijen/otrs-1,mburggraf/otrs,StCyr/otrs,MBRG/otrs,xhoy/otrs,StCyr/otrs,capeit-tto/otrs,thorsteneckel/otrs,moritz/otrs,balazj/otrs,balazj/otrs,mbeijen/otrs-1,mburggraf/otrs,crythias/otrs,nilei/otrs,thorsteneckel/otrs