adding new BasicUser Object
refactoring getCurrentUser and getCurrentUserBasic and adapting tests
updating javadoc
correct Javadoc
since all values will be returned even if empty, all values will be
checked if empty and if yes will be set to empty string
rename of package minimalUser to user
updating Javadoc
Merge pull request #39 from davidmoebius/OSNG-203

Osng 203