Adding core Containers module

Container part used for content types that group child items together
Containable part provides UI to select which item is ContainerId

--HG--
branch : dev

src/Orchard.Web/Core/Containers/Migrations.cs

@@ -0,0 +1,24 @@
+using System;
+using Orchard.ContentManagement.MetaData;
+using Orchard.Core.Contents.Extensions;
+using Orchard.Data.Migration;
+
+namespace Orchard.Core.Containers {
+    public class Migrations : DataMigrationImpl {
+        public int Create() {
+            SchemaBuilder.CreateTable("ContainerPartRecord",
+                          table => table
+                              .ContentPartRecord()
+                              .Column<bool>("Paginated")
+                              .Column<int>("PageSize")
+                              .Column<string>("OrderByProperty")
+                              .Column<int>("OrderByDirection"));
+
+            ContentDefinitionManager.AlterPartDefinition("ContainerPart", builder => builder.Attachable());
+            ContentDefinitionManager.AlterPartDefinition("ContainablePart", builder => builder.Attachable());
+ 
+            return 1;
+        }
+
+    }
+}