Regression: blogpost author names are not set

When updating the name of a Blogpost author in an Author document, the updated name is not shown on the site. Also when creating a new Blogpost (in whichever editor) the name of the linked Author document is not shown.

The names used on the site come from a myhippoproject:authornames property on the node, but that is not set.

It seems that the org.onehippo.cms7.essentials.components.cms.handlers.AuthorFieldHandler#handle method should take care of that. It uses the configuration at /hippo:configuration/hippo:modules/essentials-eventbus-listener/hippo:moduleconfig. The projectNamespace property always contains the value "essentials" which is hardly ever valid. But even when I update that value to "myhippoproject" (for a default archetype project) and restart the server, the expected changes do not occur.

The configuration in the repository should be bootstrapped by the esssentials feature, not by essentials-component. The namespace value should be configured in a xml file with the 

{{namespace}}

property placeholder. I think this is a regression of the move of the component code to the separate essentials-components project.

Also the code should be checked to fix the functionality.