Refactored shoppingCart.php to shoppingcart.php
Merge remote-tracking branch 'origin/fraenzi-branch' into simon-branch
Removed case-sensitivity from site names
Modified login session variables, implemented ShopUser
Added first version of admin interface (admin.php)
Added "Admin" link to the sidebar
beautified shopping cart
fixed display shoppingCart functions
implemented display shoppincCart small function for sidebar