Add category mapping to torrentday, make logs viewable from web ui and change log messages to report new/old release count.

src/Jackett/AuthenticationException.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Jackett
+{
+    class AuthenticationException : Exception
+    {
+    }
+}