Nodes - Rewrote storage

src/Artemis.Storage/Entities/Profile/Nodes/NodeConnectionEntity.cs

@@ -1,10 +1,12 @@
-namespace Artemis.Storage.Entities.Profile.Nodes
+using System;
+
+namespace Artemis.Storage.Entities.Profile.Nodes
 {
     public class NodeConnectionEntity
     {
         public string SourceType { get; set; }
-        public int SourceNode { get; set; }
-        public int TargetNode { get; set; }
+        public Guid SourceNode { get; set; }
+        public Guid TargetNode { get; set; }
         public int SourcePinCollectionId { get; set; }
         public int SourcePinId { get; set; }
         public string TargetType { get; set; }

src/Artemis.Storage/Entities/Profile/Nodes/NodeEntity.cs

@@ -10,7 +10,7 @@ namespace Artemis.Storage.Entities.Profile.Nodes
             PinCollections = new List<NodePinCollectionEntity>();
         }
 
-        public int Id { get; set; }
+        public Guid Id { get; set; }
         public string Type { get; set; }
         public Guid PluginId { get; set; }