admin panel, and registration says enter your artsy password if needed - fixes #179
fix runloop timing issue for countdown - fixes #175
don't animate collectionview layout changes
image aspect ratio fixes #168
adds the ability to go back to different registation views
little animations to the popover
clear all cookies between auth'd sessions
merge
Merge pull request #180 from orta/location

@ashfurrow => Lots of small changes