feat: 美化 firefox 瀏覽器滾動條

fix: Utterances 評論區在多個頁面顯示的是同一個評論區
fix: 修復評論配置爲 Livere 和 Facebook Comments 時，最新評論模塊仍然顯示的 bug
improvement: blueimp_md5 CDN 可配置
improvement: timeline 優化
improvement: css優化
improvement: 友情鏈接優化

layout/includes/page/flink.pug

@@ -40,18 +40,29 @@
 
     else
       if site.data.link
+        - let result = ''
         each i in site.data.link
-          if i.class_name
-            !=markdown(`## ${i.class_name}`)
-          if i.class_desc
-            .flink-desc!=i.class_desc
-          .flink-list
-            each item in i.link_list
-              .flink-list-item
-                a(href=url_for(item.link)  title=item.name target="_blank")
-                  .flink-item-icon
-                    img.no-lightbox(src=url_for(item.avatar) onerror=`this.onerror=null;this.src='` + url_for(theme.error_img.flink) + `'` alt=item.name )
-                  .flink-item-name= item.name 
-                  .flink-item-desc(title=item.descr)= item.descr
+          - let className = i.class_name ? markdown(`## ${i.class_name}`) : ''
+          - let classDesc = i.class_desc ? `<div class='flink-desc'>${i.class_desc}</div>` : ''
+
+          - let listResult = ''
+
+          each j in i.link_list
+            - 
+              listResult += `
+                <div class="flink-list-item">
+                  <a href='${j.link}' title='${j.name}' target='_blank'>
+                    <div class='flink-item-icon'>
+                      <img class='no-lightbox' src='${j.avatar}' onerror='this.onerror=null;this.src="${url_for(theme.error_img.flink)}"' alt='${j.name}' />
+                    </div>
+                    <div class='flink-item-name'>${j.name}</div> 
+                    <div class='flink-item-desc' title='${j.descr}'>${j.descr}</div>
+                  </a>
+                </div>`
+            -
+
+          - result += `${className}${classDesc} <div class='flink-list'>${listResult}</div>`
+
+        - page.content = result + page.content
     != page.content