Javascript for Emojis

This covers the basic features I'm aiming for with this app. 

In the future I want to add GitHub style auto suggestions when people type :, but that'll be on a day with more time to spend. For now it's good enough there's a way at all.

Also I want to make it easier to add your own Emojis into the mix, probably by hooking in with staticfiles app to use that to go to the emojis/img folder and iterate over. Instead of just looking for the names in the current folder.

Javascript tests uses PhantomJS, originally it was running inside of Node.js
but that wasn't working out when it came to the DOM. While PhantomJS is
Chrome it is still Good Enough(TM) to cover most cases.

I'm not entirely satisfied with how the Javascript "class" is, but I need to read up a bit more on Javascript to manage that better.