move metadata language to per library

MediaBrowser.Model/Configuration/LibraryOptions.cs

@@ -15,6 +15,18 @@
         public bool ImportMissingEpisodes { get; set; }
         public bool EnableAutomaticSeriesGrouping { get; set; }
 
+        /// <summary>
+        /// Gets or sets the preferred metadata language.
+        /// </summary>
+        /// <value>The preferred metadata language.</value>
+        public string PreferredMetadataLanguage { get; set; }
+
+        /// <summary>
+        /// Gets or sets the metadata country code.
+        /// </summary>
+        /// <value>The metadata country code.</value>
+        public string MetadataCountryCode { get; set; }
+
         public LibraryOptions()
         {
             EnablePhotos = true;