Simplified shopping cart
Moved form generation into function, adapted sites
Fixed registration and DB inserts
Fixed checkout process steps 1-2
Completed checkout process
Added AUTO_INCREMENT to 'order.order_id'
Cleaned up files no longer needed (checkout process)
Merge remote-tracking branch 'origin/simon-branch' into fraenzi-branch

Conflicts:
	Webshop/webroot/checkout.php
updated css for main page