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.