Revert "Shutting down site after a successful 6 November 2012 run!"

This reverts commit a0deb46182e706f8bb043cc0a6e73f9ed8f04e7b.

This commit also adds a configuration setting to put the site into "shutoff"
mode.  This allows us to merge the production and development streams,
such that we can continue to add features without losing the ability
to deploy to the site when needed.

Conflicts:
	config/deploy/production.rb