优化

app/src/main/res/values/strings.xml

@@ -978,5 +978,8 @@
     <string name="verification_code">验证码</string>
     <string name="timeout_millisecond">超时毫秒数</string>
     <string name="file_not_supported">Continue to open although %1$s is not supported ?</string>
+    <string name="import_tts">导入TTS</string>
+    <string name="import_theme">导入主题</string>
+    <string name="import_txt_toc_rule">导入txt目录规则</string>
     <!-- string end -->
 </resources>