Added check if init owner selection of new ticket screen is empty.
Added check if init owner selection of new ticket screen is empty.

monotek/zammad,zammad/zammad,monotek/zammad,monotek/zammad,monotek/zammad,zammad/zammad,monotek/zammad,zammad/zammad,zammad/zammad,zammad/zammad,monotek/zammad,zammad/zammad