Modify layout
Add index.html content
Add support for pretty urls
Create history section
Create HTML5 document outline
Add accesibility features

* Keyboard shortcuts for the four main nav links using
  accesskey
* Link prioritizing with tabindex
Remove aside_profile temporarily
Create general framework for cards
Create event card
Create Significance card
Create related-links card
Create related-video card
Create news-links card
Create general card
Change development and build configurations
Write basic card css
Add subtle box shadow effect to cards
Accent main-card more subtly
Comment out width css for a mobile-first design
Change image and video widths to 100%