implement and test sql db accessor

core/nkode/db_accessor.go

@@ -5,10 +5,11 @@ import (
 )
 
 type DbAccessor interface {
-	GetCustomer(m.CustomerId) (*Customer, error)
-	GetUser(m.Username, m.CustomerId) (*User, error)
-	WriteNewCustomer(Customer) error
-	WriteNewUser(User) error
-	UpdateUserInterface(m.UserId, UserInterface) error
+	GetCustomer(m.CustomerId) (*m.Customer, error)
+	GetUser(m.Username, m.CustomerId) (*m.User, error)
+	WriteNewCustomer(m.Customer) error
+	WriteNewUser(m.User) error
+	UpdateUserInterface(m.UserId, m.UserInterface) error
 	Renew(m.CustomerId) error
+	RefreshUser(m.User, []int, m.CustomerAttributes) error
 }