Prettier email links and attempt to fix bug

you can't do this, this is a text.html partial, which means it's not HTML. Thus, putting a link_to doesn't make sense here. (think of text-only e-mails that you receive).

Note: if there is a vote_submitted.html.haml partial, we will actually send both partials, and the receiver's e-mail client will display the html-one if it is capable of html reading.