siteModule for gfycat.com

We built a new gif hosting site, gfycat.com.  We knew reddit loves res, but man they LOVE res!  Most prominent feedback on our site is make it work with res: http://www.reddit.com/r/Cinemagraphs/comments/1k2kxn/we_started_working_at_making_a_better_site_for/

So, here is the pull request!

Pastebin here: http://pastebin.com/UsvTmaV6

I'm not super familiar with your codebase so hopefully I've done this correctly.  Tested and verified to work on my local fork.