Add PUD to The Playlist.
By making the PUD contain all the actions that would otherwise be only accesible from the contextmenu it becomes a perfect alternative for touchscreens.

This will also allow dragging from The Playlist with the convenience of the PUD.

This is far from a perfect commit.

I will attempt to fix what is broken and cleanup later this week.

The Playlist is not really my speciality so might need some help.