add psotgresql support to the backup script
add psotgresql support to the backup script

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