added new uml and some requirements
added some reqirements and a new uml
Merge branch 'master' of https://github.com/ese-unibe-ch/ese2013-team9

Conflicts:
	documentation/srs/Shoppyapp - Requirements Specification.docx
Merge branch 'master' of https://github.com/ese-unibe-ch/ese2013-team9
added handler for local database and simple user- and shoppinglist-classes