Moved numpad control to Tanshu.Common. Billing feature complete. Delete not working as expected

Signed-off-by: unknown <tanshu@.(none)>

Tanshu.Accounts.SqlDAO/Fluent/NotNullConvention.cs

@@ -0,0 +1,24 @@
+using System;
+using FluentNHibernate.Conventions;
+using System.Reflection;
+using FluentNHibernate;
+using FluentNHibernate.Conventions.Instances;
+using FluentNHibernate.Conventions.Inspections;
+using FluentNHibernate.Conventions.AcceptanceCriteria;
+using Tanshu.Accounts.Contracts;
+
+namespace Tanshu.Accounts.Conventions
+{
+    public class NotNullConvention : IPropertyConvention
+    {
+        public void Apply(IPropertyInstance instance)
+        {
+            if (!HasAttribute(instance.Property.MemberInfo)) return;
+            instance.Not.Nullable();
+        }
+        bool HasAttribute(ICustomAttributeProvider provider)
+        {
+            return provider.GetCustomAttributes(typeof(NotNullAttribute), false).Length == 1;
+        }
+    }
+}