update routes to allow GIFs
can not set gif as thumbnail
nav avatars as gifs
fix up getting GIF sources
cleanup media modal
set the max-height on any image elmenets as well
fix video sizing
refactor media modal
masonry images should always be full width
min-width the media-modal image as well
disable range requests
refactor images route, send 503 if image is in progress
media feature for GIFs, better in general.
media modals no longer require fit-video-frame
Merge branch 'master' of git://github.com/discore/discore

Conflicts:
	routes/images.js