Remove hash fragment from URLs

They give away the fact that this is a single page app, and aren't
indexed by Google. Removing them will allow us to create a sitemap and
people to deep-link into search results.

This doesn't fix the routing everywhere. Subsequent commits!
Teach contributorsView to use proper link destination
Make Multiples / Contributor views use #-less URLs
Merge pull request #156 from tdooner/remove_hash_from_urls

Remove hash from urls