Update:Select all episodes showing option #1878 & add translations to episodes modal

client/strings/zh-cn.json

@@ -223,6 +223,7 @@
   "LabelDiscFromFilename": "从文件名获取光盘",
   "LabelDiscFromMetadata": "从元数据获取光盘",
   "LabelDownload": "下载",
+  "LabelDownloadNEpisodes": "Download {0} episodes",
   "LabelDuration": "持续时间",
   "LabelDurationFound": "找到持续时间:",
   "LabelEbook": "电子书",
@@ -317,6 +318,7 @@
   "LabelNewPassword": "新密码",
   "LabelNextBackupDate": "下次备份日期",
   "LabelNextScheduledRun": "下次任务运行",
+  "LabelNoEpisodesSelected": "No episodes selected",
   "LabelNotes": "注释",
   "LabelNotFinished": "未听完",
   "LabelNotificationAppriseURL": "通知 URL(s)",
@@ -376,6 +378,8 @@
   "LabelSearchTitle": "搜索标题",
   "LabelSearchTitleOrASIN": "搜索标题或 ASIN",
   "LabelSeason": "季",
+  "LabelSelectAllEpisodes": "Select all episodes",
+  "LabelSelectEpisodesShowing": "Select {0} episodes showing",
   "LabelSendEbookToDevice": "发送电子书到...",
   "LabelSequence": "序列",
   "LabelSeries": "系列",
@@ -395,6 +399,8 @@
   "LabelSettingsExperimentalFeaturesHelp": "开发中的功能需要你的反馈并帮助测试. 点击打开 github 讨论.",
   "LabelSettingsFindCovers": "查找封面",
   "LabelSettingsFindCoversHelp": "如果你的有声读物在文件夹中没有嵌入封面或封面图像, 扫描将尝试查找封面.<br>注意: 这将延长扫描时间",
+  "LabelSettingsHideSingleBookSeries": "Hide single book series",
+  "LabelSettingsHideSingleBookSeriesHelp": "Series that have a single book will be hidden from the series page and home page shelves.",
   "LabelSettingsHomePageBookshelfView": "首页使用书架视图",
   "LabelSettingsLibraryBookshelfView": "媒体库使用书架视图",
   "LabelSettingsOverdriveMediaMarkers": "对章节使用 Overdrive 媒体标记",