add tab about translate

src/lang/template.rs

@@ -39,6 +39,9 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("Change ID", ""),
         ("Website", ""),
         ("About", ""),
+        ("About RustDesk", ""),
+        ("Slogan_tip", ""),
+        ("Privacy Statement", ""),
         ("Mute", ""),
         ("Audio Input", ""),
         ("Enhancements", ""),