feat: 增加首頁評論數顯示

fix: 修復點擊toc後，滾動完toc的highlight在點擊的上一個元素
fix: 修復打賞按鈕Hover的bug close #473
improvement: 友情鏈接界面增加title顯示（top_img設為false時）
improvement: 優化toc顯示，當向上滾動時，導航欄不會遮擋 toc close #472
improvement: 升級facebook comment sdk版本

layout/includes/page/flink.pug

@@ -1,19 +1,23 @@
-.flink#article-container
-  if site.data.link
-    each i in site.data.link
-      if i.class_name
-        h2!= 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")
-              if theme.lazyload.enable
-                img(data-lazy-src=url_for(item.avatar) onerror=`this.onerror=null;this.src='` + url_for(theme.error_img.flink) + `'` alt=item.name )
-              else
-                img(src=url_for(item.avatar) onerror=`this.onerror=null;this.src='` + url_for(theme.error_img.flink) + `'` alt=item.name )
-              span.flink-item-name= item.name 
-              span.flink-item-desc(title=item.descr)= item.descr
-  != page.content
+#article-container
+  if top_img === false
+    h1.page-title= page.title
+
+  .flink
+    if site.data.link
+      each i in site.data.link
+        if i.class_name
+          h2!= 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")
+                if theme.lazyload.enable
+                  img(data-lazy-src=url_for(item.avatar) onerror=`this.onerror=null;this.src='` + url_for(theme.error_img.flink) + `'` alt=item.name )
+                else
+                  img(src=url_for(item.avatar) onerror=`this.onerror=null;this.src='` + url_for(theme.error_img.flink) + `'` alt=item.name )
+                span.flink-item-name= item.name 
+                span.flink-item-desc(title=item.descr)= item.descr
+    != page.content