Build 20

- Edited contact page for updated descriptions.
- Edited footer for smaller sized text and spelling corrections.
- Edited header for new JS-powered search form.
- Updated new master mastheads
- Edited global.js for new search bar.
- Adjusted font sizing on both footer and disclaimer.
- Added contact page, as well as generic pages to multi-column layout
- Updated version to 20.
- Compiled all changes into `style.css`.