Models

models.json

// Tag Model
{
	_id: mongo id,
	label: string,
	...
}

// Video Model
{
	_id: mongo id,
	title: string,
	tags: [ mongo id (reference to Tag)  ]
	...
}

// Playlist Model
{
	_id: mongo id,
	title: string
	videos: [ mongo id (reference to Video) ],
	...
}