breaking changes: 適配 disqusjs 3.0

fix: 修復首頁文章 valine 評論數只顯示第一篇的 bug
fix: 修復子目錄下，第三方插件本地資源無法加載的 bug closed #908
fix: 評論系統開啟時 busuanzi 的 page_pv 不顯示的 bug closed #902
fix: 修復 pjax 下，使用 mermaid 跳轉會重新加載的 bug

layout/includes/header/post-info.pug

@@ -76,6 +76,10 @@
             if theme.twikoo.visitor
               +pvBlock('','','')
                 span#twikoo_visitors
+          default
+            if theme.busuanzi.page_pv
+              +pvBlock('','post-meta-pv-cv','')
+                span#busuanzi_value_page_pv
       else if theme.busuanzi.page_pv
         +pvBlock('','post-meta-pv-cv','')
           span#busuanzi_value_page_pv
@@ -93,10 +97,13 @@
         
         case whichCount
           when 'Disqus'
-          when 'Disqusjs'
             +countBlock
               span.disqus-comment-count
                 a(href=full_url_for(page.path) + '#disqus_thread')
+          when 'Disqusjs'
+            +countBlock
+              a(href=full_url_for(page.path) + '#disqusjs')
+                span.disqus-comment-count(data-disqus-url=full_url_for(page.path))
           when 'Valine'
             +countBlock
               a(href=url_for(page.path) + '#post-comment' itemprop="discussionUrl")