This task is as a result of the previous discussions with some SRE members in IRC and private venues since this would require a review from the T&S desk, after which the SRE can now handle (that's if I'm correct).
gratisdata.miraheze.org needs to be added as a value for wgCrossSiteAJAXdomains in gratispaideiawiki; and
gratispaideia.miraheze.org needs to be added as a value for wgCrossSiteAJAXdomains in gratisdatawiki.
Over:)