Press Resources styling fixes

- Fixes #111
- Fixes #112
- Refactored to use .content-l in places, but many still need overrides.
- General responsiveness improvements
- Adds images
- Tweaks .content-l third columns to be proper single cols between 600
  and 768.
Merge from upstream and rebuild docs

Conflicts:
	static/css/main.ie.min.css
	static/css/main.min.css
Merge pull request #113 from Scotchester/gh-pages

Press Resources styling fixes