Shop appearance.

Column	Type	Constraint	Description
shop	TEXT	PRIMARY KEY	Shop ID. (shop.username)
template_name	TEXT	NOT NULL	Template name. Same name directory must be on Shop's template/ directory.
css_name	TEXT	NOT NULL	Stylesheet name. Same name directory must be on Shop's css/ directory. style.css in the directory is loaded as a default.

CREATE TABLE appearance(
shop           TEXT,
template_name  TEXT   NOT NULL,
css_name       TEXT   NOT NULL,
PRIMARY KEY (shop)
);