breaking changes: 精簡各評論的配置

fix: 修復footer 在部分瀏覽器沒有顯示在底部的 bug
improvement: 修改配置文件註釋

_config.yml

@@ -281,12 +281,8 @@ disqus:
 # https://github.com/SukkaW/DisqusJS
 disqusjs:
   shortname:
-  siteName:
   apikey:
-  api:
-  nocomment: # display when a blog post or an article has no comment attached
-  admin:
-  adminLabel:
+  option:
 
 # livere (來必力)
 # https://www.livere.com/
@@ -301,11 +297,6 @@ gitalk:
   repo:
   owner:
   admin:
-  language: en # en, zh-CN, zh-TW, es-ES, fr, ru
-  perPage: 10 # Pagination size, with maximum 100.
-  distractionFreeMode: false # Facebook-like distraction free mode.
-  pagerDirection: last # Comment sorting direction, available values are last and first.
-  createIssueManually: false # Gitalk will create a corresponding github issue for your every single page automatically
   option:
 
 # valine
@@ -313,17 +304,9 @@ gitalk:
 valine:
   appId: # leancloud application app id
   appKey: # leancloud application app key
-  pageSize: 10 # comment list page size
   avatar: monsterid # gravatar style https://valine.js.org/#/avatar
-  lang: en # i18n: zh-CN/zh-TW/en/ja
-  placeholder: Please leave your footprints # valine comment input placeholder (like: Please leave your footprints)
-  guest_info: nick,mail,link # valine comment header info (nick/mail/link)
-  recordIP: false # Record reviewer IP
   serverURLs: # This configuration is suitable for domestic custom domain name users, overseas version will be automatically detected (no need to manually fill in)
   bg: # valine background
-  emojiCDN: # emoji CDN
-  enableQQ: false # enable the Nickname box to automatically get QQ Nickname and QQ Avatar
-  requiredFields: nick,mail # required fields (nick/mail)
   visitor: false
   option:
 
@@ -461,9 +444,9 @@ google_adsense:
 # --------------------------------------
 
 site_verification:
-  # - name: google_site_verification
+  # - name: google-site-verification
   #   content: xxxxxx
-  # - name: baidu_site_verification
+  # - name: baidu-site-verification
   #   content: xxxxxxx
 
 # Beautify/Effect (美化/效果)