Same logo, all pages.

The use of a small logo no longer makes sense on layouts that exceed 900px wide. We will use the large logo on all pages.
Removing some HTML semantic tags in favor of ARIA landmark roles, which Cascade does not choke on (as much).
Simplifying slide designs.
Preparing contentBox to hold all content on all pages.

Makes for a much more intuitive page layout. Easily separates the main content from the left column visually.
Standardize background colors in navigation.