update postgres gem (pg)
Convert application.css to application.css.scss
Add CSS reset
require valid email addresses for subscriptions
refactor helpers, include mechanism to determine whether to show/hide the sidebar subscription form
Add the image from the wiki to the front page
give hint to click pages to turn them on the book
forgot to include the ApplicationHelper
install the jquery.infieldlabel plugin
Tweak the design:

* Add the SolSeed Emblem
* Use a header, footer, sidebar, and content layout
* Move the form into the sidebar
* etc