old_contents: import template from './add-user.template.html'
  import controller from './add-user.controller.js'
  
  export default {
    template,
    controller,
    bindings: {editedUser: '='}
  }
  
new_contents: import template from './add-user.template.html'
  import controller from './add-user.controller.js'
  
  export default {
    template,
    controller,
    bindings: {editedUser: '<'}
  }
  
subject: change bindings