Show content type for links in comments (e.g. PDF, Video, etc) to assist mobile users
As suggested/discussed here:
https://tildes.net/~tildes/15my/new_users_ask_your_questions_about_tildes_here#comment-9hv6
As suggested/discussed here:
https://tildes.net/~tildes/15my/new_users_ask_your_questions_about_tildes_here#comment-9hv6