Provide edit permissions per state

Initial patch to see what breaks.

One thing that is confusing me: I tried to use AccessResult::neutral() in the 2 places where it does the parent::access() call instead as that seems to be what you're supposed to do but that just resulted in access denieds across the board. I've had the same issue before and I'm not sure why.

Lets try that again.

Adding permissions to the moderation state admin test user.

That's a good point, we'll see what the maintainer thinks.

Just reading the first 2 paras of that module, it doesn't seem to fit this feature request.

Workbench Access creates editorial access controls based on hierarchies. It is an extensible system that supports structures created by other Drupal modules.

When creating and editing content, users will be asked to place the content in an editorial section. Other users within that section or its parents will be able to edit the content. A user may be granted editorial rights to a section specific to his account or by his assigned role on the site.

This is specifically edit permissions based on workbench state. Nothing to do with hierarchies, sections, etc.

Rerolled against HEAD.

Thanks Lee, looks like there's a couple of 7.x modules out there already so moving to #2824135: Drupal 8 port

Cheers