added handler for local database and simple user- and shoppinglist-classes
Merge branch 'master' of https://github.com/ese-unibe-ch/ese2013-team9
Merge branch 'master' of https://github.com/ese-unibe-ch/ese2013-team9
Merge branch 'master' of https://github.com/ese-unibe-ch/ese2013-team9
Merge branch 'master' of https://github.com/ese-unibe-ch/ese2013-team9
Merge branch 'master' of https://github.com/ese-unibe-ch/ese2013-team9
Added new database handler