Permitir o envio de e-mails de teste quando o correio estiver desabilitado?

[rishabh]

@pfaffman

Now that we allow sending mail to admins when mail is disabled, might we enable sending mail go ANY address in the mail test field?

This is now merged, thanks @pfaffman

https://github.com/discourse/discourse/commit/c279792130e24dffbbdee8d6cbb0bad46cc13b72