Update libraries and clean up.

Update links to jquery 1.9.0 and angularjs 1.0.4.
Remove unused in-repository jquery (already link to google's). Remove
unused in-repository jquery.cookie because localStorage is used for
persistent storage.
Toss out github ribbon and facebook like button.

They clutter things up without (imo) any benefit.

Also, facebook is a paragon of evil. I banish thee, foul dæmon!
Impotent coffeescript rewrite.

Because I continue to childishly refuse to write a single line of
"real" javascript.

This is more or less copied line-for-line from the original javascript
with only two notable changes.

The first is to replace a few instances of
`$scope.deck.cards[$scope.currentIndex]` with `$scope.currentCard` as
they should point to the same object. Hopefully this doesn't secretly
ruin everything (it currently doesn't seem to, at least).

The second is to use dot notation for accessing objects (when possible)
rather than bracket notation, and to make this consistent throughout
the script.
Stop trying to load everything as images.

Change the behavior from angular.js hiding/showing text or an image, to
passing the innerHtml for the card div straight from nextCard().

The reason for doing this is primarily the fact that I didn't like it
filling my browser console with load errors on every new card. Other
than that I don't know if it's a better way to handle it.