implement Session-API, fix code selection problem for the Demo Web-App.

ElectronNET.API/Entities/RemoveClientCertificate.cs

@@ -0,0 +1,31 @@
+namespace ElectronNET.API.Entities
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public class RemoveClientCertificate
+    {
+        /// <summary>
+        /// Origin of the server whose associated client certificate must be removed from
+        /// the cache.
+        /// </summary>
+        public string Origin { get; set; }
+
+        /// <summary>
+        /// clientCertificate.
+        /// </summary>
+        public string Type { get; set; }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="origin">Origin of the server whose associated client certificate 
+        /// must be removed from the cache.</param>
+        /// <param name="type">clientCertificate.</param>
+        public RemoveClientCertificate(string origin, string type)
+        {
+            Origin = origin;
+            Type = type;
+        }
+    }
+}