Select type added for client schema

NzbDrone.Core/Notifications/Prowl/ProwlPriority.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace NzbDrone.Core.Notifications.Prowl
+{
+    public enum ProwlPriority
+    {
+        VeryLow = -2,
+        Low = -1,
+        Normal = 0,
+        High = 1,
+        Emergency = 2
+    }
+}

NzbDrone.Core/Notifications/Prowl/ProwlSettings.cs

@@ -11,8 +11,8 @@ namespace NzbDrone.Core.Notifications.Prowl
         [FieldDefinition(0, Label = "API Key", HelpText = "API Key for Prowl")]
         public String ApiKey { get; set; }
 
-        [FieldDefinition(1, Label = "Priority", HelpText = "Priority to send messages at")]
-        public Nullable<Int32> Priority { get; set; }
+        [FieldDefinition(1, Label = "Priority", HelpText = "Priority to send messages at", Type = FieldType.Select, SelectOptions= typeof(ProwlPriority) )]
+        public Int32 Priority { get; set; }
 
         public bool IsValid
         {