Added height adaption for iframes on AgentTicketZoom, thanks to Bo Feng.
Added height adaption for iframes on AgentTicketZoom, thanks to Bo Feng.

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