feat: 在綫聊天新增facebook洽談外掛程式 closed #918

feat: 添加artalk評論 closed #933
fix: 修復 開啟 archor 後， facebook評論加載不正確的 bug
fix: 修復 facebook 評論數無法加載的 bug

layout/includes/third-party/card-post-count/index.pug

@@ -11,4 +11,6 @@ case theme.comments.use[0]
   when 'Facebook Comments'
     include ./fb.pug
   when 'Remark42'
-    include ./remark42.pug
+    include ./remark42.pug
+  when 'Artalk'
+    include ./artalk.pug