Add XML docs to small DLNA model types and remove CS1591 suppressions

MediaBrowser.Model/Dlna/ResolutionOptions.cs

@@ -1,11 +1,18 @@
-#pragma warning disable CS1591
-
 namespace MediaBrowser.Model.Dlna
 {
+    /// <summary>
+    /// The resolution constraints.
+    /// </summary>
     public class ResolutionOptions
     {
+        /// <summary>
+        /// Gets or sets the maximum width.
+        /// </summary>
         public int? MaxWidth { get; set; }
 
+        /// <summary>
+        /// Gets or sets the maximum height.
+        /// </summary>
         public int? MaxHeight { get; set; }
     }
 }