updating documentation to use new glosary

As a follow up of https://github.com/openmicroscopy/openmicroscopy/pull/3020#issuecomment-55398118 there is an update of the OMERO.web doc
@will-moore it was fixed in https://github.com/openmicroscopy/openmicroscopy/pull/3046/files#diff-7e3491c8f527592430b6decfcdc7c4d3R443. I am not sure why it doesn't pick up the latest build. @sbesson could you make sure it will build tomorrow?