Fixed screen output for ticket_history changes (adding an index).
Fixed screen output for ticket_history changes (adding an index).

mburggraf/otrs,rudy500/otrs,mburggraf/otrs,xhoy/otrs,rudy500/otrs,xhoy/otrs,mburggraf/otrs,xhoy/otrs,rudy500/otrs,mburggraf/otrs,mburggraf/otrs,xhoy/otrs,rudy500/otrs,xhoy/otrs,rudy500/otrs