Revert "Remove iframe param - ENSWEB-5575"
Revert "Remove iframe param - ENSWEB-5575"

This reverts commit cae1c72ffac70b8d15e00fd168a278757b95e046.

Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode,Ensembl/ensembl-webcode