Fixing a warning from the haml/sass gems.
Updating ruby and gemset files for rvm.
Moving Wishlist from a collection of library functions into its own model.

Since we need to store these locally now, some reorganization was
in order.
Fixed comment typo
Detecting the new "your collection is being generated" messages from
BGG.
Upgrading to Rails 4.

Might as well. The upgrade wasn't a big deal, and I wanted to
use some of the new ActiveRecord features.
Moving the BGG-specific bits of fetching collections into its own class. The local Wishlist should be entirely unconcerned with how its data actually arrives.
Collection/wishlist updates

* Parser detects invalid usernames.
* UI gives notice that BGG is still compiling data.
* rake task to retry wishlists
cleaning up old rake task
Collections update will clean out invalid users
Added a simple stats page and collection refreshing.