843c6f7f5ahotkey 't' to toggle 'Sort by Titles'/'Sort default'
1. properly reset enclosure template variables if there's no enclosures
2. add ARTICLE_OG_IMAGE which sets flavor image for article using common code with article render etc
1. less hacky way to catchup actually unread headlines
2. don't fade rows away because it's inconsistent with different mark-as-read functions
3. fix stuck progress alert
fa538a6c86implement year-week sorting window if headlines buffer is grouped by feed titles