Fixed StatsCleanUp() and added StatsInstall() and StatsUninstall() function.
Fixed StatsCleanUp() and added StatsInstall() and StatsUninstall() function.

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