Add initial class for featured Youtube functionality.
Figured out how to reuse the MEXP Youtube view.
Add hidden form input and logic to display correct link.
Just show URL in a pre tag.
Hookup remove video link.
Create controller subclass to take over insert button, swap pre tag for iframe youtube previews.
Fix featured video retrieval and only show iframe if there’s one set.
Save featured URL on post save.
Merge featured_youtube_video.