Feature: Decommission Reasons

As requested in #1

Disco.Data/Migrations/201309050648129_DBv8.Designer.cs

@@ -0,0 +1,27 @@
+// <auto-generated />
+namespace Disco.Data.Migrations
+{
+    using System.Data.Entity.Migrations;
+    using System.Data.Entity.Migrations.Infrastructure;
+    using System.Resources;
+    
+    public sealed partial class DBv8 : IMigrationMetadata
+    {
+        private readonly ResourceManager Resources = new ResourceManager(typeof(DBv8));
+        
+        string IMigrationMetadata.Id
+        {
+            get { return "201309050648129_DBv8"; }
+        }
+        
+        string IMigrationMetadata.Source
+        {
+            get { return null; }
+        }
+        
+        string IMigrationMetadata.Target
+        {
+            get { return Resources.GetString("Target"); }
+        }
+    }
+}

Disco.Data/Migrations/201309050648129_DBv8.cs

@@ -0,0 +1,21 @@
+namespace Disco.Data.Migrations
+{
+    using System;
+    using System.Data.Entity.Migrations;
+    
+    public partial class DBv8 : DbMigration
+    {
+        public override void Up()
+        {
+            AddColumn("dbo.Devices", "DecommissionReason", c => c.Int());
+
+            // Set DecommissionedReason to default ('End Of Life') for any previously decommissioned devices.
+            Sql("UPDATE dbo.Devices SET DecommissionReason=0 WHERE NOT DecommissionedDate IS NULL");
+        }
+        
+        public override void Down()
+        {
+            DropColumn("dbo.Devices", "DecommissionReason");
+        }
+    }
+}