To enable Comments:
1) Enable Comments option in Comment Component configuration in Admin. 2) Set Show Comments option in Magazine Component configuration in Admin
To make article title show in comment form subject box and page url to be sent in email:
1) Comment out the conditional that checks for autodetect parameter in modules/mod_comments_comment/mod_comments_comment.php. Will force to save page route and title in jxcomments_thread table. Comment form uses fields in thread table to fill form and email.