Images: Background and social media pins.
Structure: Avoid 'box in box' display for categories and archives.
Structure: Add social media and navigation links.
Style: theme final style.
Structure: Fixed navigation. Wrong file were copied by mistake previously.
Load web fonts.
Minor modifications.

_syntax.scss: Avoid scattering customization places for code blocks line numbers.
index.html: There is already a link for archives in navigation.
article.html: Show date above the title ribbon.
Fix: should have been part of last commit.
Line social media buttons correctly. Update README.