Just a curiosity ... is it possible to not have the "Redirected from xxx " displayed under the new page's title when a page has been moved?
Yes. Edit [[MediaWiki:Redirectedfrom]] so that it just contains " " (ie. a single non-breaking space). From my quick tests, a completely blank page, or a page with a regular space is ignored and the default is shown, but a non-breaking space seems to work.