Convert to Magnific Popup and re-enable lazy load
Tweak lightbox
Fix retina lightbox images
Increase quality of 300px derivatives
Affix glossary letter links
Improve glossary letter links
Glossary letter links use bootstrap nav pills, and enable scrollspy
Improve nav links
Style tweaks
Fix broken header classes
Create searchable_html in before_save
Fix a style
Work on Format ID Guide
Update Format ID Guide content