feat: 去除 jQuery (fancybox和圖庫 仍需要加載jQuery)

feat: 點擊文字特效增加隨機配置
feat: 可配置是否添加css前綴
fix: 修復子目錄下，配置justifiedGallery CDN（相對鏈接）後，連接會無法訪問的bugs
fix: 修復 pangu 配置post 後，仍在全站生效的bugs
improvement: 夜間模式下，廣告降低亮度
improvement: 手機端toc邊距微調
improvement: html格式優化
improvement: 搜索優化
improvement: 刪除不必要的語言文件

layout/includes/head/config.pug

@@ -54,7 +54,8 @@
   if (theme.ClickShowText && theme.ClickShowText.enable) {
     ClickShowText = JSON.stringify({
     text: theme.ClickShowText.text.join(","),
-      fontSize: theme.ClickShowText.fontSize
+      fontSize: theme.ClickShowText.fontSize,
+      random: theme.ClickShowText.random
     })
   }
 
@@ -119,9 +120,16 @@ script.
     ClickShowText: !{ClickShowText},
     lightbox: '!{ theme.medium_zoom ? "mediumZoom" : (theme.fancybox ? "fancybox" : "null" )}',
     Snackbar: !{Snackbar},
-    justifiedGallery: {
-      js: '!{theme.CDN.justifiedGallery_js}',
-      css: '!{theme.CDN.justifiedGallery_css}'
+    source: {
+      jQuery: '!{url_for(theme.CDN.jquery)}',
+      justifiedGallery: {
+        js: '!{url_for(theme.CDN.justifiedGallery_js)}',
+        css: '!{url_for(theme.CDN.justifiedGallery_css)}'
+      },
+      fancybox: {
+        js: '!{url_for(theme.CDN.fancybox)}',
+        css: '!{url_for(theme.CDN.fancybox_css)}'
+      }
     },
     isPhotoFigcaption: !{theme.photofigcaption},
     islazyload: !{theme.lazyload.enable},
@@ -156,5 +164,17 @@ script.
     }
   }
 
-
-
+  // https://stackoverflow.com/questions/16839698/jquery-getscript-alternative-in-native-javascript
+  const getScript = url => new Promise((resolve, reject) => {
+    const script = document.createElement('script')
+    script.src = url
+    script.async = true
+    script.onerror = reject
+    script.onload = script.onreadystatechange = function() {
+      const loadState = this.readyState
+      if (loadState && loadState !== 'loaded' && loadState !== 'complete') return
+      script.onload = script.onreadystatechange = null
+      resolve()
+    }
+    document.head.appendChild(script)
+  })