Merge pull request #28 from broggi/master

Fixed 'Update' in DBHandler
Merge pull request #29 from broggi/master

Implemented Edit in AddList + Check items
Merge pull request #30 from broggi/master

Renamed MainActivity & Updated Design
Deleted the not used shoppy android project and some documents
Merge pull request #31 from LukasGalliker/master

Deleted the not used shoppy android project and some documents
added count-methods for Items and ShoppingLists