feat: extended functionalTests to Journal, Groupfinding and Assessment module

...c/main/java/unipotsdam/gf/config/GFApplicationBinder.java

...n/src/main/java/unipotsdam/gf/core/states/PhasesImpl.java

...src/main/java/unipotsdam/gf/interfaces/IGroupFinding.java

...chen/src/main/java/unipotsdam/gf/interfaces/IJournal.java

...c/main/java/unipotsdam/gf/interfaces/IPeerAssessment.java

...ain/java/unipotsdam/gf/modules/assessment/QuizAnswer.java

...f/modules/assessment/controller/model/StudentAndQuiz.java

.../modules/assessment/controller/service/FBAssessement.java

...modules/assessment/controller/service/PeerAssessment.java

...es/assessment/controller/service/PeerAssessmentDummy.java

...tsdam/gf/modules/assessment/controller/view/QuizView.java

...unipotsdam/gf/modules/groupfinding/DummyGroupfinding.java

...potsdam/gf/modules/groupfinding/GroupfindingCriteria.java

.../unipotsdam/gf/modules/groupfinding/GroupfindingImpl.java

.../java/unipotsdam/gf/modules/journal/DummyJournalImpl.java

...nipotsdam/gf/modules/peer2peerfeedback/DummyFeedback.java

.../test/java/unipotsdam/gf/interfaces/ActivityFlowTest.java

.../test/java/unipotsdam/gf/testsandbox/SpiedListHolder.java

...src/test/java/unipotsdam/gf/testsandbox/TestTestTest.java