feat: 更新 lazyload 配置，支持原生 lazyload 功能

feat: 代碼優化
feat: 優化 pageType 邏輯
fix: 修復解密文章後， chartjs 沒有加載的 bug

layout/includes/rightside.pug

@@ -3,7 +3,7 @@ mixin rightsideItem(array)
   each item in array
     case item
       when 'readmode'
-        if is_post() && readmode
+        if globalPageType === 'post' && readmode
           button#readmode(type="button" title=_p('rightside.readmode_title'))
             i.fas.fa-book-open
       when 'translate'
@@ -35,7 +35,7 @@ mixin rightsideItem(array)
   - const hideArray = enable ? hide && hide.split(',') : ['readmode','translate','darkmode','hideAside']
   - const showArray = enable ? show && show.split(',') : ['toc','chat','comment']
 
-  
+
   #rightside-config-hide
     if hideArray
       +rightsideItem(hideArray)
@@ -45,7 +45,7 @@ mixin rightsideItem(array)
         button#rightside-config(type="button" title=_p("rightside.setting"))
           i.fas.fa-cog.fa-spin
     else
-      if is_post()
+      if globalPageType === 'post'
         if (readmode || translate.enable || (darkmode.enable && darkmode.button))
           button#rightside-config(type="button" title=_p("rightside.setting"))
             i.fas.fa-cog.fa-spin