Add:Ebook and supplementary ebook library filters

client/strings/zh-cn.json

@@ -224,6 +224,7 @@
   "LabelDuration": "持续时间",
   "LabelDurationFound": "找到持续时间:",
   "LabelEbook": "Ebook",
+  "LabelEbooks": "Ebooks",
   "LabelEdit": "编辑",
   "LabelEmail": "Email",
   "LabelEmailSettingsFromAddress": "From Address",
@@ -251,6 +252,8 @@
   "LabelGenre": "流派",
   "LabelGenres": "流派",
   "LabelHardDeleteFile": "完全删除文件",
+  "LabelHasEbook": "Has ebook",
+  "LabelHasSupplementaryEbook": "Has supplementary ebook",
   "LabelHost": "Host",
   "LabelHour": "小时",
   "LabelIcon": "图标",