Per suggestion on wikitech-l, use "Create( this page)" instead of "Edit( this page...

Per suggestion on wikitech-l, use "Create( this page)" instead of "Edit( this page)" when the page doesn't actually exist yet.  It makes quite a bit more sense.  (Incidentally, am I the only one who finds it weird that different skins use different messages?  They probably shouldn't use raw wfMsg() either, unless that's getting escaped later somewhere.)