.listActions on a referenced_list should target referenced entity

[jpetitcolas]

If I want to be able to remove comments from the post edition page, I can use the following code:

                nga.field('comments', 'referenced_list')
                    .targetEntity(comment)
                    .targetReferenceField('post_id')
                    .targetFields([
                        nga.field('id').isDetailLink(true),
                        nga.field('created_at').label('Posted'),
                        nga.field('body').label('Comment'),
                    ])
                    .listActions(['delete'])
                    .sortField('created_at')
                    .sortDir('DESC'),

Yet, the Delete button added through the listActions method propose to delete a post, not the selected comment.

[fzaninotto]

Should work since #655

[fzaninotto]

It does work, see marmelab/ng-admin-demo@2d3166e and e.g. http://marmelab.com/ng-admin-demo/#/customers/edit/638