add cinema mode feature

MediaBrowser.Common/Extensions/BaseExtensions.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Globalization;
 using System.Security.Cryptography;
 using System.Text;
 using System.Text.RegularExpressions;
@@ -54,6 +55,28 @@ namespace MediaBrowser.Common.Extensions
             return sb.ToString();
         }
 
+        /// <summary>
+        /// Removes the accent.
+        /// </summary>
+        /// <param name="text">The text.</param>
+        /// <returns>System.String.</returns>
+        public static string RemoveAccent(this string text)
+        {
+            var normalizedString = text.Normalize(NormalizationForm.FormD);
+            var stringBuilder = new StringBuilder();
+
+            foreach (var c in normalizedString)
+            {
+                var unicodeCategory = CharUnicodeInfo.GetUnicodeCategory(c);
+                if (unicodeCategory != UnicodeCategory.NonSpacingMark)
+                {
+                    stringBuilder.Append(c);
+                }
+            }
+
+            return stringBuilder.ToString().Normalize(NormalizationForm.FormC);
+        }
+
         /// <summary>
         /// Gets the M d5.
         /// </summary>