(bug 44293) Fix URL generation when $wgServer is protocol-relative.

$wgServer can be protocol-relative, which causes invalid
URLs to be provided to OpenID providers and consumers.
This fixes the calls to Title::getFullURL to make sure
all URLs have a scheme.

bump to version 3.32

Change-Id: I087a6eeeec1ea2206968e0cabb83b62c4275d570