I have found this link and checked it using http://ci.openmicroscopy.org/job/OMERO-5.1-merge-build/ICE=3.5,label=ome-c6100-3/javadoc/slice2html/omero/api/IScript.html found by @ximenesuk (thanks a lot).  The link here is fine and brings me to http://www.openmicroscopy.org/site/support/omero5/developers/scripts/ which seems fine as well.
As for the other 2 links, no way for us with @ximenesuk to find them.