Merge pull request #31 from LukasGalliker/master

Deleted the not used shoppy android project and some documents
added count-methods for Items and ShoppingLists
ExpandableListViewAdapter % Design Changes
Merge pull request #32 from broggi/master

ExpandableListViewAdapter & Design Changes
corrected getCount
Merge pull request #33 from marcSchneiter/master

corrected getCount for ShoppingLists and Items