Multiple changes (super change!)
- Moved init function to index.php
- Moved ShoppingCart to classes/ folder
- Renamed shoppinglist to shoppingCart
- Fixed addItem in ShoppingCart
- Blah
Merge remote-tracking branch 'origin/fraenzi-branch' into simon-branch

Conflicts:
	Webshop/doc/Brainstorming-ToDo.md
	Webshop/webroot/header.php