Fix:Rich text editor labels and add translations

client/strings/zh-cn.json

@@ -281,8 +281,11 @@
   "LabelFinished": "已听完",
   "LabelFolder": "文件夹",
   "LabelFolders": "文件夹",
+  "LabelFontBold": "Bold",
   "LabelFontFamily": "字体系列",
+  "LabelFontItalic": "Italic",
   "LabelFontScale": "字体比例",
+  "LabelFontStrikethrough": "Strikethrough",
   "LabelFormat": "编码格式",
   "LabelGenre": "流派",
   "LabelGenres": "流派",
@@ -403,6 +406,7 @@
   "LabelRecentlyAdded": "最近添加",
   "LabelRecentSeries": "最近添加系列",
   "LabelRecommended": "推荐内容",
+  "LabelRedo": "Redo",
   "LabelRegion": "区域",
   "LabelReleaseDate": "发布日期",
   "LabelRemoveCover": "移除封面",
@@ -491,6 +495,10 @@
   "LabelTagsAccessibleToUser": "用户可访问的标签",
   "LabelTagsNotAccessibleToUser": "用户无法访问标签",
   "LabelTasks": "正在运行的任务",
+  "LabelTextEditorBulletedList": "Bulleted list",
+  "LabelTextEditorLink": "Link",
+  "LabelTextEditorNumberedList": "Numbered list",
+  "LabelTextEditorUnlink": "Unlink",
   "LabelTheme": "主题",
   "LabelThemeDark": "黑暗",
   "LabelThemeLight": "明亮",
@@ -516,6 +524,7 @@
   "LabelTracksSingleTrack": "单轨",
   "LabelType": "类型",
   "LabelUnabridged": "未删节",
+  "LabelUndo": "Undo",
   "LabelUnknown": "未知",
   "LabelUpdateCover": "更新封面",
   "LabelUpdateCoverHelp": "找到匹配项时允许覆盖所选书籍存在的封面",