Patch 1.1: comments, bylines and share cards

First patch, a few hours after launch.

• Comments under articles, by signing in with Discord.
• Author bylines at the end of articles: photo, name and short bio.
• Share cards: a Beacon Mag link shared on Discord, X, WhatsApp… shows a nice banner, the title and the description.
• Better Google ranking (descriptions, sitemap).
• Articles can include tables.
• Fix: the News page gets its sections, featured article and partner capsule back.