v0.4.0-1

• Updated to Just the Docs v0.4.0, which upstreamed changes present in Just the Class such as the minimal layout (just-the-docs/just-the-docs#1058) and explicit jekyll-seo-tag declaration (just-the-docs/just-the-docs#1040).
• Various _sass fixes and clean-up of unused styles.
• Reduced the minimum width for schedule columns from 130px to 120px to accommodate 6-day weeks without horizontal scrolling in larger device layouts.
• Updated permalink pattern in README.md to use /:path/ to improve URL display of the home page in search results.
• Update UCSB link in README.md by @ykharitonova in #21