This ensures that if GENDER is fed wfEscapeWikitext()'d version
of a username, it will normalize it.
See discussion on T182800.
Note, we do not need to worry about the case of a user named
"Project:*foo" as such namespace prefixes are illegal in
usernames.
Change-Id: Ic5a8fc76c28dca43ce8e334ef1874c2673433f00
