Started db.php to change database structure.
Changed database structure to new version.

DB.php almost finished - a connector to database. Need to add delete.

User.php started - can instantiate an object from id which retrieves User info from database. Same with email. Can insert a new User by instantiating an object User by inputting fields.

UserInserts.php will use User.php and DB.php to add friends, messages, bases etc.