Updates authorized web services/http handlers to use WebSecurity and implements the new base class

properties available in 6.1. Updates WebSecurity with a few more helpful methods.

src/Umbraco.Web/Security/ValidateRequestAttempt.cs

@@ -0,0 +1,11 @@
+namespace Umbraco.Web.Security
+{
+    internal enum ValidateRequestAttempt
+    {
+        Success,
+        FailedNoPrivileges,
+        FailedTimedOut,
+        FailedNoContextId,
+        FailedNoSsl
+    }
+}