Structured Data, Lazy Web Font, CV link, absolute switcher

Added

• Added Structured Data (Author, Organization, WebSite, WebPages + breadcrumbs, Article)

Changed

• Theme Switcher is now position absolute (previously was fixed)
• Lazy load Web Font (+ JS fallback)

Fixed

• Link to CV in about page
• Contentful Rich Text Renderer can now handle Assets links

Removed

• dead code in the home grid forfillcolor setting