user
	id
	email
	password
	first_name
	last_name
	
content
	id
	kind		FK
	title
	body
	pub_date
	alt_date
	user		FK
	tags 		FK
	seo			FK
	
kind
	id
	label

cus_fields
	id
	label
	name
	kind_id		FK

tags
	id
	name

content_tags
	id
	content
	tag
	
seo
	id
	title
	description
	keywords
	content