feat: 過期通知優化，可單獨文章關閉

fix: 修復説説評論 css 受主題影響的 bug

layout/includes/head/config_site.pug

@@ -23,6 +23,5 @@ script#config-diff.
     isHome: !{is_home()},
     isHighlightShrink: !{isHighlightShrink},
     isToc: !{showToc},
-    postUpdate: '!{full_date(page.updated)}',
     isShuoshuo: !{page.type == 'shuoshuo'}
   }