Add various NUX states

Summary: Adds basic NUX UI to Countdown, Paste, Phurl, Ponder, Slowvote, Macro, and Pholio.

Test Plan: Review each with ?nux=true. Click on Create Button.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D14840