Seymore - r30

Hello everyone, I just committed a pretty decent update to Seymore's
subversion trunk. Most notably, I implemented a simple authorization
system that will be flexible enough to be used with plugins in the
future (when there is a plugin architecture). With this authorization
system, the api has also been firmed up a bit. Feedback would be great!

* Implemented a custom user authorization system that is flexible
  to be extended by future plugins and simple enough for use in views.
* Secured all controllers and actions using the above system. [Issue
* Removed the authorization controller and separated login and logout
  into their own controllers.
* Added a default 'Home' page that can be modified like any other page.
* Page names can now be updated.
* Un-publishing of the current revision can now happen from the page's
  action menu, rather than solely only from the revisions list.

Project page:

Oh, yeah. Make sure to rake migrate!