Enables internal comments for a given Custom Post Type when Editing Draft or Pending posts. The comments are only visible in the backend. And marked as internal in the dashboard.

Based on this WordPress Question.

• Comments do not appear in frontend
• Comments do not appear when editing a Published post
• Controlled via Karma and Comment Meta

###All comments screen - Custom column - Custom background

###Private comments screen - No custom column - No custom background

###Editing a Draft CPT

• WordPress version 3.4 and later (not tested with previous versions)

• Adjust the CPT name in the class
• Or use helper-cpt.php to create a testing post type

• http://core.trac.wordpress.org/browser/tags/3.4.2/wp-admin/includes/ajax-actions.php#L719
• http://wordpress.org/support/topic/using-comment_type-field-for-my-own-purposes
• http://wordpress.stackexchange.com/q/39784/12615
• http://wordpress.stackexchange.com/q/56652/12615
• http://wordpress.stackexchange.com/q/61072/12615
• http://wordpress.stackexchange.com/q/63422/12615
• http://wordpress.stackexchange.com/q/64973/12615
• http://wordpress.stackexchange.com/q/72210/12615
• http://wordpress.stackexchange.com/q/74018/12615
• http://stackoverflow.com/q/4054943/1287812

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