Add info

[sunyatasattva]

Info should be accessible from the top right. A button should open a sidebar showing some explanation.

Sidebar should default to open on first visit.

[sunyatasattva]

• Add chain icons on hover of the section titles, for easy sharing of pointed links
• Transition to highlighted area
• Color should blink and fade to something more reasonable
• Add some images for easier reading
• Split the last info section into multiple subheaders
• Actually implement open and close buttons
• Autoclose when any other interaction is performed on the page
• Add “Pin” button to avoid this behavior
• Add styles for .option inside infobar