Added Prowl notifications.

NzbDrone.Web/Models/ProwlPrioritySelectListModel.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+
+namespace NzbDrone.Web.Models
+{
+    public class ProwlPrioritySelectListModel
+    {
+        public string Name { get; set; }
+        public int Value { get; set; }
+    }
+}