Update old omero4 URLs to omero5
Add missing EOF newlines (thanks, sed)
Remove obsolete .uk suffix from site URLs

The URL prefix http://www.openmicroscopy.org.uk/site/ has a
blanket redirect to http://www.openmicroscopy.org/site/ now.
Remove undesirable https URL prefixes

The https URLs often come up if you leave yourself logged in, because
while logged in everything redirects to https automatically. But really
we want to link to the faster http version of the URLs externally.