Fixed constructors and added User profile picture support in methods
Fix + Start
Fixed a little copy-paste mistake in TestComment, altered 'new Idea(..)' in TestConcreteIdea to work when using the latest Idea class, Started work on TestFieldOfStudy by creating setup, testGetters and testToString.
Merge branch 'database' of github.com:utwente-di/di18 into Tests
Fixed all constructors and found and repaired several bugs
added some javadoc
Merge branch 'database' of github.com:utwente-di/di18 into Tests
Finished TestFieldOFStudy
added replace for é, no more errors in tests