Add new navbar, sidebar, and overview
Update the layout of Pages including:

1. Using up the full span for content
2. Adding affix and scrollspy to the sidebar
3. Adding a picture to each pages banner
4. Cleaning up the CSS
Cleanup unused CSS style sheets as well as some html
Add the new Sheet model and update the rest of the app to support it
Add new americo logo images that include transparency and update the sample image
Add layout changes to the home page and carousel