Add functionality to pull the artists tweets.

Cache the html and twitter_id of tweets into the database.
Fix TwitterService after testing against API.
Convert news page layout to foundation.

Instead of embedding the entire twitter news feed, pull the oembed
version of the tweets and display them that way.
Function gracefully fails when id doesn't exist.

Error was causing best_in_place not to work.
Extract header markup and logic.

Use a decorator to represent the header and store callbacks so more
complicated markup and logic can be written into the header skeleton.