Update Real Name to 1.2 and correct usernames appearing in default emails

Until https://drupal.org/node/734878 is merged Real Name currently breaks user administration emails (`[user:name]` outputs the real name, but `[user:name-raw]` needs to be used when referring to the actual username). Real Name 1.2 has introduced messages that point this out (https://drupal.org/node/1827980).

They've chosen not to update the message in the site automatically, but it is possible to see if it's still the Drupal's default and change it accordingly. (This won't change it if it's been changed at all, so an unrelated one character change will stop it from updating and will have to be done manually.)