Add the citation back into the annotation card

Dokku: https://1390-add-citation-to-annotation-card.dokku.hypothes.is/

This adds back the page title and domain to the original page if present in the annotation data. I've used a more conversational way of displaying the data because I believe it's friendlier and does a better job of presenting the card to the user than just having the url and title sitting underneath the quote. We have the space on the standalone page to do things like this, I think we should take advantage of the opportunity.

![screen shot 2014-08-20 at 17 14 29](https://cloud.githubusercontent.com/assets/47144/3983087/b31df0b8-287c-11e4-9ed7-de89242bcba7.png)

@hypothesis/product thoughts please.
This is a horrible old hack that's been around for a long time, I've used it for years. Really at some point we should probably use a "proper" url parser.

First hit on Google was an article from 2009. http://james.padolsey.com/javascript/parsing-urls-with-the-dom/