Surface - Removed the ArtemisSurface and reworked device loading

src/Artemis.Storage/Entities/Surface/DeviceEntity.cs

@@ -8,8 +8,8 @@ namespace Artemis.Storage.Entities.Surface
         {
             InputIdentifiers = new List<DeviceInputIdentifierEntity>();
         }
-
-        public string DeviceIdentifier { get; set; }
+        
+        public string Id { get; set; }
         public double X { get; set; }
         public double Y { get; set; }
         public double Rotation { get; set; }

src/Artemis.Storage/Entities/Surface/SurfaceEntity.cs

@@ -1,15 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace Artemis.Storage.Entities.Surface
-{
-    public class SurfaceEntity
-    {
-        public Guid Id { get; set; }
-
-        public string Name { get; set; }
-        public bool IsActive { get; set; }
-
-        public List<DeviceEntity> DeviceEntities { get; set; }
-    }
-}