code SilverMemberForm, SilverMemberController@create and so on.
code SilverMemberController @ update, delete
code family model/controller/views
add .todo
code family @deleted & views
code family @upgrade & views and fix related bugs on @create/@update
  & views
generate GreenCard model
code greencard controller @publish @create @unbounded & views
fix related files
code greencard controller @cancel & views, fix related files, fix bugs
code greencard fix bugs