Merge pull request #50 from Gruppe01/persistence-updatehandler

Persistence updatehandler
Merge pull request #51 from Gruppe01/persistence-updatehandler

Updated tests
login updated
Merge branch 'master' of ssh://git@github.com/Gruppe01/EXPHIL03.git
added getUser
login check created
Added test for external user and group
Merge pull request #52 from Gruppe01/model-unittests

Added test for external user and group
DataStorage should be working now.