Export rstr_sha1 too
Fix timeline graph not responding to hashchange events

I haven't figured out why the hashchange plugin is broken all of a
sudden, but I'm guessing it has something to do with the execution
order now. Removing the plugin altogether fixes things; all of our
supported browsers have the native onhashchange event:

https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers.onhashchange#Browser_compatibility
http://wiki.musicbrainz.org/Supported_Browsers