Follow-up fix: Agent gets "Session invalid" if large group names are used (bug#12502).
Follow-up fix: Agent gets "Session invalid" if large group names are used (bug#12502).

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